Is It Tax Efficient to Have an Electric Company Car? (w/Examples) + FAQs

Yes, an electric company car is one of the most tax-efficient vehicles a business can own in 2026. IRC § 280F caps how much you can deduct each year for a regular passenger car — just $20,200 in the first year even with bonus depreciation. That cap forces businesses to spread deductions over six or more years. Many electric vehicles weigh over 6,000 pounds, which means they bypass those caps and qualify for a full first-year write-off through Section 179 and 100% bonus depreciation.

A business that buys a $90,000 electric SUV with a gross vehicle weight rating (GVWR) over 6,000 pounds can deduct the entire $90,000 in year one. At a 24% federal tax rate, that is $21,600 back in your pocket before you even count state savings and lower fuel costs.

  • 🔋 How Section 179 and 100% bonus depreciation let you write off an entire electric vehicle in one year
  • ⚖️ Why the clean vehicle credits (30D, 45W, 25E) expired after September 30, 2025 — and what replaced them
  • 💼 How the IRS taxes personal use of an employer-provided electric car and the four valuation methods that control it
  • 💰 Three real-number scenarios showing the tax impact for business owners, employees, and self-employed workers
  • 🏛️ Which state incentives still stack on top of federal deductions in 2026

What “Tax Efficient” Means for an Electric Company Car

A company car is tax efficient when the business deductions, credits, and cost savings it creates are greater than the extra costs it adds. The goal is to reduce your taxable income by as much as possible in the year you buy or place the vehicle in service. The bigger the deduction relative to the price, the more tax efficient the vehicle becomes.

Electric vehicles hit this target from two directions. They qualify for aggressive depreciation rules under the Internal Revenue Code that allow massive first-year write-offs. They also cost less to operate because electricity is cheaper than gasoline and EVs have fewer moving parts that need repair.

The IRS treats a company car the same whether it runs on gas or electricity — with one big exception. Many electric SUVs and trucks have a GVWR above 6,000 pounds because of their heavy battery packs. That extra weight pushes them past the threshold where IRC § 280F luxury auto limits stop applying, unlocking deductions that lighter gas cars cannot access.

How Section 179 Works for Electric Company Cars

Section 179 of the Internal Revenue Code lets a business deduct the full purchase price of qualifying equipment — including vehicles — in the year it is placed in service. For 2026, the maximum Section 179 deduction is $2,560,000. This deduction begins to phase out when total equipment purchases exceed a set threshold, but most small and mid-size businesses fall well below that number.

The SUV Cap You Need to Know

Vehicles with a GVWR above 6,000 pounds qualify for Section 179, but there is a separate SUV cap that limits the deduction. For 2025, that cap was $31,300 per vehicle. The IRS adjusts this number each year for inflation. This means a heavy EV that costs $80,000 would only get $31,300 of Section 179 — but the remaining balance qualifies for bonus depreciation.

Vehicles with a GVWR under 6,000 pounds face a much tighter limit. These fall under the luxury automobile depreciation caps in IRC § 280F. The first-year limit is $20,200 with bonus depreciation and just $12,200 without it. That is a fraction of the vehicle’s cost, which makes lighter cars far less tax efficient in the short term.

Why GVWR Is the Most Important Number on the Sticker

The Gross Vehicle Weight Rating is the maximum loaded weight a vehicle is designed to carry. The IRS uses this number — not the curb weight — to decide which depreciation rules apply. You can find it on the manufacturer’s label on the driver’s side door jamb. Every electric SUV and truck with a GVWR above 6,000 pounds escapes the luxury auto caps.

Popular electric vehicles that exceed the 6,000-pound GVWR threshold include the Tesla Model XFord F-150 LightningRivian R1SRivian R1TCadillac LYRIQBMW iX, and Mercedes EQS SUV. Their heavy battery packs push them over the line that lighter gas-powered sedans cannot reach.

100% Bonus Depreciation Is Back — And It Is Permanent

The One Big Beautiful Bill Act (P.L. 119-21), signed into law on July 4, 2025, permanently reinstated 100% bonus depreciation for qualifying business property placed in service after January 19, 2025. Before this law, bonus depreciation had been dropping by 20% each year — it was down to 40% for early 2025. The OBBBA reversed that decline and locked in the full 100% rate going forward.

What This Means for Your Electric Vehicle

When you combine Section 179 and 100% bonus depreciation on a heavy electric vehicle, you can deduct the entire purchase price in year one. You first apply the Section 179 deduction (up to the SUV cap). Then you apply 100% bonus depreciation to whatever is left. The result is a full write-off.

Deduction TypeHow It Applies to a Heavy EV
Section 179Up to $31,300 (2025 SUV cap, adjusted annually) of the vehicle’s cost
100% Bonus DepreciationApplied to the remaining cost basis after Section 179

You report these deductions on IRS Form 4562 (Depreciation and Amortization). The vehicle must be used more than 50% for business to qualify for both deductions. If business use drops to 50% or below, the IRS can recapture part of the deduction in a future year, which means you would owe taxes on the amount you claimed.

Lighter EVs Still Face the Luxury Auto Caps

If your electric car has a GVWR under 6,000 pounds — like a Tesla Model 3 or Chevrolet Equinox EV — it falls under the IRC § 280F caps. Here is what those annual limits look like for a vehicle placed in service in 2025:

Tax YearMaximum Depreciation (With Bonus)
Year 1$20,200
Year 2$19,600
Year 3$11,800
Year 4+$7,060 per year

A $55,000 electric sedan placed in service in 2025 would take roughly six years to fully depreciate under these caps. Compare that to a heavy electric SUV, where the entire cost comes off your taxable income in the first year. This is why vehicle weight is a central factor in tax efficiency.

The Clean Vehicle Credits Expired — Here Is What That Changes

The Inflation Reduction Act of 2022 created generous tax credits for clean vehicles. The New Clean Vehicle Credit (IRC § 30D) offered up to $7,500 for individuals buying qualifying new EVs. The Commercial Clean Vehicle Credit (IRC § 45W) gave businesses up to $7,500 for lighter vehicles and up to $40,000 for heavier ones. The Used Clean Vehicle Credit (IRC § 25E) provided up to $4,000 for qualifying pre-owned EVs.

The OBBBA ended all three credits for any vehicle acquired after September 30, 2025. If you bought or leased a qualifying EV before that date, you can still claim the credit on your return. If you buy an EV today, in 2026, no federal clean vehicle tax credit exists.

Why Depreciation More Than Fills the Gap

The loss of the credits stings, but for business vehicles, the math still works heavily in your favor. A $7,500 credit reduces your tax bill dollar-for-dollar. A $90,000 first-year depreciation deduction on a heavy EV reduces your taxable income by $90,000. At a 24% effective tax rate, that deduction saves you $21,600 — nearly three times the old credit. At the top 37% rate, the savings hit $33,300.

There is one important link between the old credits and depreciation. If you claimed a Section 45W credit before it expired, the amount of the credit reduced your vehicle’s depreciable basis. A $100,000 electric truck with a $7,500 credit had a depreciable basis of $92,500, not $100,000. This rule no longer matters for new purchases in 2026, but it affects depreciation schedules on vehicles bought before October 2025.

How the IRS Taxes Personal Use of an Employer-Provided EV

When a business provides a car to an employee, the business use portion is a tax-free working condition benefit under IRC § 132. The employee does not pay tax on the value of driving the car for work. The personal use portion — commuting, errands, weekend trips — is a taxable fringe benefit under IRC § 61 that must be included in the employee’s W-2 wages.

The employer must calculate and report this value. The IRS requires the fringe benefit amount to be subject to income tax withholding, Social Security tax, and Medicare tax. The employer can either add the value to the employee’s regular wages or withhold at the flat 22% supplemental wage rate.

The Four Valuation Methods

The IRS provides four ways to calculate the value of personal use of a company vehicle. Each method produces a different dollar amount. The employer picks one method and must use it consistently.

1. General Valuation Rule (Fair Market Value)

This method values the personal use at what the employee would pay to lease the same vehicle in an arm’s-length transaction. It is the broadest method and works for any vehicle. Most businesses use one of the special rules below because they are simpler.

2. Cents-Per-Mile Rule

You multiply the employee’s personal miles by the IRS standard mileage rate — 72.5 cents per mile for 2026. This method works only if the vehicle’s fair market value does not exceed a set limit on the date it is first made available to an employee. For 2025, that limit was $61,200. It also requires either regular business use or a mileage threshold of at least 10,000 miles per year.

3. Commuting Rule

This flat-rate method values each one-way commute at $1.50 per trip. It is only available when the employer requires the employee to commute in the vehicle for bona fide business reasons, the employer has a written policy prohibiting personal use other than commuting, and the employee is not a “control employee” (generally, an officer or highly compensated employee earning above a threshold set by the IRS).

4. Lease Value Rule

You look up the vehicle’s fair market value on the Annual Lease Value Table in IRS Publication 15-B. That table gives you an annual lease value based on price brackets. You then multiply the annual lease value by the percentage of total miles the employee drives for personal use. This method locks in for four years before requiring a new valuation.

Valuation MethodBest For
Cents-Per-MileVehicles under $61,200 FMV with high personal mileage
Commuting RuleRank-and-file employees who only commute in the vehicle
Lease Value RuleHigher-value vehicles with a known personal-use percentage
General (FMV) RuleAny vehicle when no special rule applies

Why EVs Create a Lower Fringe Benefit for Employees

Electric vehicles cost less to operate than gas cars. The employer spends less on fuel (electricity vs. gasoline) and less on maintenance (no oil changes, fewer brake replacements). Under the cents-per-mile rule, the fringe benefit value is the same rate regardless of fuel type — 72.5 cents per mile — so the employee does not save on the reported income through this method. Under the lease value rule and general FMV rule, a lower-cost-to-operate vehicle may produce a slightly lower valuation depending on the comparable lease market.

The bigger advantage is for the employer. Lower operating costs mean the total expense of providing the vehicle drops. The employer still deducts the full depreciation, insurance, and maintenance — those deductions are just smaller for an EV because the costs themselves are smaller.

Workplace Charging: A Potential De Minimis Fringe Benefit

If an employer provides free EV charging at the workplace, the electricity may qualify as a de minimis fringe benefit under IRC § 132(e). A de minimis benefit is one that is so small and infrequent that accounting for it would be unreasonable. The IRS has not issued a definitive ruling on workplace charging, but a 2016 IRS letter suggested it could qualify under certain conditions. Employers should evaluate this on a case-by-case basis and document their reasoning.

Three Real-Number Scenarios That Show the Tax Impact

Scenario 1: Small Business Owner Buys a Heavy Electric SUV

Maria owns a marketing agency as an S corporation. She buys a new Rivian R1S for $85,000 in March 2026. The vehicle’s GVWR is 7,700 pounds. She uses it 90% for business.

Tax CalculationAmount
Purchase Price$85,000
Business-Use Percentage90%
Depreciable Basis (Business Use)$76,500
Section 179 Deduction (SUV Cap)$31,300
Remaining Basis After Section 179$45,200
Bonus Depreciation (100%)$45,200
Total Year-One Deduction$76,500

At a combined federal and state tax rate of 30%, Maria’s first-year tax savings are approximately $22,950. She effectively pays a net price of $62,050 for an $85,000 vehicle. Without these depreciation rules — if she had to use straight-line depreciation over five years — she would deduct only $15,300 in year one and wait until 2031 to fully write off the vehicle.

The critical takeaway: Maria must maintain at least 50% business use for the entire recovery period. If her business use drops to 40% in year two, the IRS will recapture the excess depreciation — meaning she will owe additional tax.

Scenario 2: Employer Provides an Electric Car to an Employee

GlobalTech Inc. buys a Tesla Model Y (GVWR: 5,303 pounds) for $52,000 and assigns it to their regional sales manager, David. David drives 20,000 miles per year — 15,000 for business and 5,000 for personal use.

Because the Model Y weighs under 6,000 pounds, the luxury auto caps apply. GlobalTech can deduct only $20,200 in year one (with bonus depreciation), not the full $52,000.

For David’s personal-use fringe benefit, GlobalTech uses the cents-per-mile rule:

Fringe Benefit CalculationAmount
Personal Miles5,000
IRS Mileage Rate (2026)$0.725
Taxable Fringe Benefit$3,625

GlobalTech adds $3,625 to David’s W-2 wages. David pays income tax, Social Security, and Medicare on that amount. At a 22% federal income tax bracket, David owes about $798 in extra federal income tax for the personal use of the car. David still gets to drive a $52,000 vehicle for personal use at a cost of roughly $67 per month in additional taxes — a significant value compared to leasing a similar car privately.

What if GlobalTech chose a heavier EV instead? If they bought a Ford F-150 Lightning (GVWR: 8,250 lbs) for $65,000, they could deduct the entire business-use portion in year one. That is a difference of over $30,000 in first-year deductions compared to the Model Y.

Scenario 3: Self-Employed Consultant Leases an Electric Sedan

James is a self-employed IT consultant who files Schedule C. He leases a Chevrolet Equinox EV for $450 per month ($5,400 per year). His business use is 70%.

Lease Deduction CalculationAmount
Annual Lease Payments$5,400
Business-Use Percentage70%
Deductible Lease Expense$3,780

James deducts $3,780 on his Schedule C. He also deducts 70% of his electricity charging costs, insurance, and tolls. The IRS requires a lease inclusion amount adjustment for higher-value leased vehicles, which reduces the deduction slightly. James must keep a mileage log to prove his 70% business-use claim.

James cannot claim Section 179 or bonus depreciation on a leased vehicle because he does not own it. Leasing trades the big first-year deduction for smaller, predictable monthly write-offs. For consultants who prefer lower upfront costs and steady cash flow, leasing an EV can still be tax efficient — just not as aggressive as buying.

State-Level EV Incentives That Still Apply in 2026

Federal clean vehicle credits are gone, but many states still offer their own savings. These incentives vary by state and can include rebates, tax credits, sales tax exemptions, and utility bill discounts.

StateKey EV Incentive
New JerseySales tax exemption on eligible zero-emission vehicles; up to $4,000 Charge Up NJ rebate for income-qualifying buyers
CaliforniaUp to $7,500 in state rebates plus HOV lane access
ColoradoUp to $5,000 in state credits for qualifying EVs
New YorkUp to $2,000 through the NYSERDA Drive Clean Rebate
OregonAdditional state rebates and utility-specific bill credits

New Jersey is especially generous. The state exempts eligible EVs from the 6.625% sales tax that would otherwise apply. On a $60,000 electric vehicle, that saves $3,975 at the point of sale. The Charge Up New Jersey program adds another $2,000 in rebates for standard buyers — or $4,000 for income-qualifying residents. New Jersey also offers a 10% off-peak toll discount on the Turnpike and Garden State Parkway for qualifying EVs through the Green Pass Discount Plan.

California’s rebate programs and Colorado’s state credit can stack with the federal depreciation deductions. The state incentive reduces your out-of-pocket cost, while the federal depreciation reduces your taxable income. They operate on separate tracks and do not reduce each other.

Check your state’s energy department website or the Plug In America incentive map for the latest programs. State incentives change frequently, and some have limited funding that runs out each fiscal year.

IRS Form 4562: How You Claim the Deductions

Form 4562 (Depreciation and Amortization) is where you report Section 179 deductions and bonus depreciation for your electric company car. Every business that claims depreciation on a vehicle must file this form with their tax return.

Key Sections on Form 4562

Part I — Section 179 Deduction: You enter the cost of the vehicle and the amount you elect to expense. For heavy EVs, this amount is capped at the SUV limit ($31,300 for 2025, adjusted annually). You must list the vehicle and show that business use exceeds 50%.

Part II — Bonus Depreciation: You report the remaining basis eligible for 100% bonus depreciation after subtracting Section 179. This section is where the OBBBA’s permanent reinstatement of 100% depreciation shows its power. The entire remaining basis can go here for qualifying property placed in service after January 19, 2025.

Part V — Listed Property: Vehicles are considered “listed property” under IRC § 280F. You must report the vehicle’s cost, date placed in service, business-use percentage, and depreciation method. You also list any other vehicles you are claiming. The IRS uses this section to verify that you meet the more-than-50% business-use test.

What Records You Must Keep

The IRS can deny your entire deduction if you cannot prove your business use. You need a contemporaneous mileage log that records the date, destination, business purpose, and miles driven for each trip. A smartphone app works just as well as a paper log. You also need the purchase agreement, proof of payment, and the vehicle’s GVWR documentation.

Mistakes to Avoid With Electric Company Cars

1. Assuming the Clean Vehicle Credit Still Exists

The credits under IRC §§ 30D, 25E, and 45W ended September 30, 2025. Filing a return that claims a credit for a vehicle purchased in 2026 will trigger an IRS correction, delay your refund, and possibly lead to penalties and interest.

2. Not Checking the Vehicle’s GVWR Before Buying

The difference between a 5,900-pound vehicle and a 6,100-pound vehicle is tens of thousands of dollars in first-year deductions. A vehicle at 5,900 pounds falls under the luxury auto caps. A vehicle at 6,100 pounds qualifies for full Section 179 plus bonus depreciation. Always verify the GVWR on the manufacturer’s door sticker before you finalize a purchase.

3. Letting Business Use Drop Below 50%

Section 179 and bonus depreciation both require more than 50% business use. If your usage falls below that threshold in any year during the recovery period, the IRS will recapture the excess depreciation. You will owe tax on the difference between what you deducted and what straight-line depreciation would have allowed. This can create a surprise tax bill years after the purchase.

4. Failing to Track Personal Use for Fringe Benefits

Employers must report the taxable fringe benefit of personal use on the employee’s W-2. If you do not track mileage properly, you risk underreporting wages. The IRS treats unreported fringe benefits as a payroll tax violation, which carries penalties for the employer — not the employee.

5. Forgetting the Lease Inclusion Amount

Self-employed individuals and businesses that lease a vehicle worth more than a threshold amount must reduce their lease deduction by a “lease inclusion amount” published annually by the IRS. Ignoring this adjustment overstates your deduction and can trigger an audit adjustment.

6. Claiming Section 179 on a Leased Vehicle

Only the vehicle’s owner can claim Section 179 and bonus depreciation. If you lease an EV, you deduct lease payments as a business expense instead. Claiming Section 179 on a vehicle you do not own is an error that the IRS will catch on Form 4562.

The Pros and Cons of an Electric Company Car

ProsCons
Heavy EVs qualify for full first-year write-off through Section 179 + 100% bonus depreciationFederal clean vehicle credits (30D, 45W, 25E) expired after September 30, 2025
Lower fuel costs — electricity costs roughly 60-70% less per mile than gasolineHigher upfront purchase price compared to equivalent gas models
Reduced maintenance expenses (no oil changes, less brake wear)Charging infrastructure is still limited in some rural and suburban areas
State rebates and sales tax exemptions can stack with federal depreciationBattery replacement is expensive if needed outside warranty coverage
Employer-provided EV charging may qualify as a de minimis fringe benefitLighter EVs (under 6,000 lbs GVWR) face restrictive luxury auto depreciation caps
Permanently reinstated 100% bonus depreciation gives long-term planning certaintyBusiness use must stay above 50% or IRS recaptures the depreciation

The Do’s and Don’ts of Electric Company Car Tax Planning

Do’s

  • Do verify the GVWR exceeds 6,000 pounds before buying to unlock maximum depreciation benefits
  • Do keep a detailed mileage log from day one — the IRS requires contemporaneous records for listed property
  • Do file Form 4562 with your tax return to claim Section 179 and bonus depreciation
  • Do check your state’s EV incentive programs for rebates and sales tax exemptions that stack with federal deductions
  • Do choose a consistent fringe benefit valuation method and apply it every year
  • Do consult a tax professional before purchasing — the interaction between Section 179, bonus depreciation, and your specific tax situation affects the optimal strategy

Don’ts

  • Don’t assume any federal clean vehicle credit applies to vehicles purchased after September 30, 2025
  • Don’t use Section 179 if your business has a net loss for the year — the deduction cannot create or increase a business loss
  • Don’t claim Section 179 or bonus depreciation on a leased vehicle — you deduct lease payments instead
  • Don’t ignore the personal use reporting requirement — the IRS treats unreported personal use of employer vehicles as a payroll tax violation
  • Don’t rely on the standard mileage rate for a vehicle you already claimed Section 179 or bonus depreciation on — the IRS requires you to use the actual expense method for that vehicle going forward
  • Don’t forget that the depreciable basis of a vehicle purchased before October 2025 is reduced by any clean vehicle credit you claimed

How Electric and Gas Company Cars Compare on Tax Efficiency

FactorElectric Vehicle (Over 6,000 lbs)Gas Vehicle (Over 6,000 lbs)Electric Vehicle (Under 6,000 lbs)
Section 179 EligibleYes (SUV cap applies)Yes (SUV cap applies)No (luxury auto caps apply)
100% Bonus DepreciationYes — full remaining basisYes — full remaining basisLimited to $8,000 extra in Year 1
Year-One Max DeductionFull purchase priceFull purchase price$20,200 (with bonus depreciation)
Annual Fuel Cost (est. 15,000 mi)~$600–$900 (electricity)~$2,400–$3,600 (gasoline)~$600–$900 (electricity)
Maintenance CostLower (fewer moving parts)Higher (oil, transmission, exhaust)Lower (fewer moving parts)
Federal Clean Vehicle CreditNot available after Sept. 30, 2025Never availableNot available after Sept. 30, 2025
State IncentivesOften available (varies by state)Rarely availableOften available (varies by state)

The sweet spot for tax efficiency is a heavy electric vehicle over 6,000 pounds GVWR. It gets the same full depreciation as a heavy gas vehicle plus the operational savings of an EV plus any state incentives. A light EV under 6,000 pounds is still cheaper to operate than a gas car, but the depreciation benefits are far more limited.

What the One Big Beautiful Bill Act Changed for Business Vehicles

The OBBBA (P.L. 119-21) made two major changes that affect electric company cars in opposite directions.

Change 1: 100% Bonus Depreciation Is Permanent. Before the OBBBA, the Tax Cuts and Jobs Act had set bonus depreciation to phase down — 80% in 2023, 60% in 2024, 40% in early 2025, and 0% by 2027. The OBBBA restored 100% for all property placed in service after January 19, 2025, and made it permanent. This is a massive win for any business buying a company vehicle.

Change 2: Clean Vehicle Credits Are Gone. The OBBBA accelerated the expiration of IRC §§ 30D, 25E, and 45W. All three credits became unavailable for vehicles acquired after September 30, 2025. For individual buyers, this is a significant loss. For business buyers, the depreciation deductions were always worth more than the credits in most cases — so the net impact is still positive.

The OBBBA did not change Section 179 limits, the luxury auto caps under IRC § 280F, or the fringe benefit rules under IRC § 132. Those provisions continue to operate under the same rules that applied before the law was enacted.

FAQs

Can I still get a federal tax credit for buying an electric company car in 2026?

No. The clean vehicle credits under IRC §§ 30D, 25E, and 45W expired for vehicles acquired after September 30, 2025. No federal EV credit exists for 2026 purchases.

Is 100% bonus depreciation available for electric vehicles in 2026?

Yes. The OBBBA permanently reinstated 100% bonus depreciation for qualifying property placed in service after January 19, 2025, including business vehicles.

Does my electric car need to weigh over 6,000 pounds for Section 179?

Yes. Vehicles with a GVWR under 6,000 pounds face the IRC § 280F luxury auto caps instead of the higher Section 179 SUV deduction limit.

Can I deduct a leased electric vehicle on my taxes?

Yes. You deduct the business-use portion of lease payments as a business expense on Schedule C or your entity return. You cannot claim Section 179 or bonus depreciation on a leased vehicle.

Do I have to pay tax on personal use of an employer-provided EV?

Yes. Personal use of any employer-provided vehicle is a taxable fringe benefit reported on the employee’s W-2 under IRS rules.

Can my business deduct the cost of installing an EV charger?

Yes. Charger installation qualifies as a business expense. The Alternative Fuel Vehicle Refueling Property Credit (IRC § 30C) may also apply for equipment placed in service before its expiration date.

Is workplace EV charging taxable to employees?

No (in most cases). Free employer-provided charging may qualify as a de minimis fringe benefit under IRC § 132(e), though the IRS has not issued definitive guidance.

Does claiming Section 179 prevent me from using the standard mileage rate?

Yes. Once you claim Section 179 or bonus depreciation on a vehicle, the IRS requires you to use the actual expense method for that vehicle in all future years.

Can I claim Section 179 if my business has a loss?

No. Section 179 cannot create or increase a net business loss. You can carry the unused portion forward to future profitable years.

Are state EV incentives taxable as federal income?

Yes (sometimes). State rebates received after purchase may be taxable as income. Sales tax exemptions reduce your cost basis but are not taxable income. Consult your tax advisor for your state’s specific treatment.

What happens if my business use drops below 50%?

Yes, there is a consequence. The IRS will recapture the excess depreciation you claimed, requiring you to pay back the tax benefit on the difference between accelerated and straight-line depreciation.

Can I combine Section 179 and bonus depreciation on the same EV?

Yes. This is the most powerful strategy for heavy EVs. You claim Section 179 first, then apply 100% bonus depreciation to the remaining basis for a full first-year deduction.