2026 Tesla Model 3 cost to own in Montana
Electricity & gas updated · insurance, fees & incentives reviewed June 17, 2026 (estimates)
Bottom line
The Tesla Model 3 costs about $7,200 more to own than the Honda Accord here today — but it pulls ahead on total cost to own if you drive more than 38,500 mi/yr (you're at 12,000) or gas tops $7.23/gal (now $3.40).
Annual charging cost
$630
$0.05/mi at $0.12/kWh
5-year cost to own
$44,900
≈ $8,990/yr all-in
5-year cost vs Honda Accord
+$7,200
more to own · fuel alone saves $650/yr
Charging a 2026 Tesla Model 3 at home in Montana costs about $626 a year at the state's average residential rate of $0.12/kWh — among the lowest in the country (8th of 51) — or roughly $0.05 per mile. With Montana gasoline near $3.40 a gallon (near the national middle), a comparable Honda Accord would burn about $1,275 of fuel over the same 12,000 miles, so the Model 3 saves roughly $649 a year at the pump. On fuel alone, gas would have to fall below $1.67 a gallon for the Accord to cost as little to fuel as the EV costs to charge (the fuel break-even).
Montana's annual registration runs about $130. There is no state purchase incentive, and the federal credit ended in late 2025. All told, the five-year cost to own comes to about $44,900 — roughly $8,990 a year. Against a comparable Honda Accord — counting its depreciation, insurance, fuel, and upkeep — that's about $7,200 more to own over five years, since the federal credit is gone and the EV's insurance and fees run higher.
Adjust the assumptions
Every figure below is editable and every formula is shown. Defaults use Montana averages and EPA efficiency for the Tesla Model 3.
Driving profile
Ownership costs — depreciation, insurance & fees
State + federal. Verify current amounts.
Depreciation is usually the largest line — and the biggest source of uncertainty — so tune it to your own resale outlook. Insurance, registration & incentives default to Montana estimates.
Comparison car: Honda Accord ownership
Defaults: depreciation & maintenance from Accord data; insurance ≈ 87% of the EV figure; registration assumes no EV road-use fee.
Precision: utility plan, L2 charger, escalation
Grows the 5-yr energy cost. Off (0%) by default.
0% = cash. Adds loan interest to both cars.
Set time-of-use rates manually above. Real utility plans aren't loaded for this state yet.
Annual energy
≈ $630
$0.05/mi
5-year cost to own
≈ $44,900
≈ $8,990/yr all-in
5-yr vs Honda Accord
+$7,200
more to own
Energy use & cost (per year)
Gas comparison (Honda Accord)
Below this pump price, the Honda Accord is cheaper to fuel than the EV is to charge; above it, the EV wins. (This is fuel only — see total cost to own below.)
5-year total cost of ownership
The operating subtotal is the data-backed part. Depreciation is an estimate and is usually the largest single line — adjust it to your own resale outlook.
5-year cost to own: EV vs gas
Bottom line
The Tesla Model 3 costs about $7,200 more to own than the Honda Accord here today — but it pulls ahead on total cost to own if you drive more than 38,500 mi/yr (you're at 12,000) or gas tops $7.23/gal (now $3.40).
Gas total includes its depreciation, fuel, insurance, maintenance, and registration (edit them in “Comparison car ownership” above).
Home L2 charger payback
How this is calculated
Annual electricity
(25 ÷ 100 × 12,000 mi) ÷ 0.88 = 3,409 kWh
Home charging cost
2,727 kWh × $0.12 = $319/yr
Public charging cost
682 kWh × $0.45 = $307/yr
Annual energy cost
$319 + $307 = $626/yr
Annual gas cost
(12,000 ÷ 32 mpg) × $3.40 = $1,275/yr
Fuel break-even gas price
$626 ÷ 375 gal = $1.67/gal
EV 5-year TCO
$24,219 + $3,130 + $13,950 + $3,000 + $650 − $0 = $44,949
Gas 5-year TCO
$14,000 + $6,375 + $12,135 + $5,000 + $250 = $37,760
5-year ownership difference
$44,949 − $37,760 = +$7,189 (EV pricier)
L2 payback
$1,300 ÷ (($0.45 − $0.12) × 2,727 kWh) = 1.4 yr
Estimates, not quotes. Figures use Montana averages and the assumptions above — your real costs depend on your utility plan, driving, insurer, and the incentives you actually qualify for. Verify with your utility, insurer, and state DMV before deciding.
5-year cost to own: Tesla Model 3 vs Honda Accord
Over five years the Tesla Model 3 costs about $7,200 more to own than the Honda Accord.
| 5-year cost | Tesla Model 3 | Honda Accord |
|---|---|---|
| Depreciation (5 yr) | $24,219 | $14,000 |
| Fuel / energy (5 yr) | $3,130 | $6,375 |
| Insurance (5 yr) | $13,950 | $12,135 |
| Maintenance (5 yr) | $3,000 | $5,000 |
| Registration & fees (5 yr) | $650 | $250 |
| Incentives | − $0 | $0 |
| 5-year total cost to own | $44,949 | $37,760 |
Efficiency: 25 kWh/100mi vs 32 mpg. Gas insurance is estimated at ~87% of the EV figure and gas registration assumes no EV road-use fee; depreciation and incentives are estimates. Edit any value in the calculator above.
When ownership costs cross over
Cumulative cost to own, year by year. The single 5-year figure hides when one car overtakes the other — useful if you don't keep a car a full five years.
The Honda Accord stays cheaper to own than the Tesla Model 3 across all five years — they never cross.
Cumulative cost to own if sold at the end of each year — depreciation realized so far plus running costs, net of one-time incentives.
How each car holds its value
Estimated resale value as a share of MSRP. The Tesla Model 3 depreciates faster than the Honda Accord — the single biggest reason for the gap above. See the methodology for the basis.
Frequently asked questions
- How much does it cost to charge a Tesla Model 3 in Montana?
- About $626 per year (~$52/month), or roughly $0.05 per mile, at Montana's average home rate of $0.12/kWh — assuming 12,000 miles a year and 80% home charging.
- Is a Model 3 cheaper to drive than a Accord in Montana?
- Yes. Charging the Model 3 costs about $626 a year versus roughly $1,275 to fuel a Accord, a saving of about $649 a year. The fuel break-even — where charging and fueling cost the same — is $1.67/gal. (That's separate from the total cost to own below.)
- Is a Model 3 cheaper to own than a Accord in Montana?
- Over five years, not in Montana: about $44,900 to own the Model 3 versus $37,800 for the Accord — roughly $7,200 more, driven by higher EV insurance and fees plus the expired federal credit. The EV still usually wins on fuel alone.
- What is the 5-year cost to own a Tesla Model 3 in Montana?
- About $44,900 over five years (~$8,990/year), combining depreciation ($24,219), energy ($3,130), insurance ($13,950), maintenance ($3,000), and registration ($650), minus $0 in incentives. Adjust any assumption in the calculator above.
- Are there EV incentives in Montana?
- We show no state purchase incentive for Montana, and the federal clean-vehicle credit ended in late 2025. Programs change often — verify current state and utility offers before buying.
- How accurate are these estimates?
- Electricity and gas prices come from EIA data and are refreshed monthly; insurance, fees, and incentives are state-level estimates you can edit. Every formula is shown in the calculator. Treat the results as ballpark comparisons, not quotes, and confirm with your utility, insurer, and DMV.
Precision mode: use your exact utility rate
Real per-utility time-of-use plans are loaded for major utilities; Montana isn't covered yet. You can still model a time-of-use plan manually in the calculator's Precision panel above.