Electric Car
Total Cost of an Electric Car in the UK: How to Calculate TCO
Updated 27 July 2026 · 9 min read
An electric car's real cost doesn't show up in the sticker price or the monthly payment. It comes from a fixed period, the price you actually paid, resale, charging, insurance, maintenance, VED, and financing.
That's TCO (Total Cost of Ownership): what the car really costs you over 3, 4, or 5 years, after resale or PCP/PCH handback.
What belongs in the real cost
| Item | What counts | Common mistake |
|---|---|---|
| Purchase price | Price actually paid, after discounts and a confirmed Electric Car Grant | Starting from the list price |
| Depreciation | Price actually paid − a conservative resale value | Being too optimistic about future resale |
| Financing | Interest, fees, deposit, balloon/buyout value | Comparing only the monthly payment |
| Energy | Mix of home off-peak, home standard, public AC, off-motorway rapid, motorway ultra-rapid | Only counting the cheapest charging rate you've seen |
| Insurance, maintenance and VED | Monthly premium, tyres, service, small repairs, annual road tax | Forgetting VED now applies to EVs at the same standard rate as petrol/diesel |
| End-of-term costs | Resale, PCP/PCH handback, reconditioning, excess mileage | Ignoring handback or excess-mileage fees |
A simple example: 4 years and 40,000 miles
Take an EV bought new for £32,000 actually paid, after any confirmed Electric Car Grant. It's kept for 4 years, driven 10,000 miles a year, and resold in this scenario for around £15,000. That resale value is an input to stress-test, not a claimed UK-wide forecast: replace it with model-, trim-, mileage-, and condition-matched listings and trade-in bids.
| Line item | Assumption | Cost over 4 years |
|---|---|---|
| Depreciation | £32,000 - £15,000 | £17,000 |
| Energy, mixed use | £350 – £650/yr | £1,400 – £2,600 |
| Insurance | £110/mo illustrative quote | £5,280 |
| Maintenance / tyres | £300 – £550/yr | £1,200 – £2,200 |
| VED | £10 first year (zero-emission), £200/yr from year 2 | £610 |
| Total before financing | Home or mixed charging | £25,490 – £27,690 |
In this example, depreciation is still the single biggest line — and it's also the least certain one, since the used-EV market can move quickly as new models and prices change. A pricier vehicle at checkout can still end up cheaper if its real resale value holds up better; compare current listings, insurance quotes, and maintenance plans specific to both models rather than assuming that advantage.
Mileage: where electric wins
At low mileage, depreciation and insurance dominate. At high mileage, every extra 1,000 miles adds far less energy cost than with a petrol car — though winter months narrow that gap somewhat.
| Annual mileage | TCO reading | What to check |
|---|---|---|
| 6,000 mi/yr | Limited energy advantage; resale weighs more heavily | Don't overpay for the car upfront |
| 10,000 mi/yr | Balanced profile for comparing EV, hybrid, and petrol | A realistic home/public charging mix, including winter months |
| 15,000 mi/yr or more | The energy saving becomes a real lever | Motorway comfort, tyres, insurance, mileage-linked depreciation |
Charging: the variable line
The figures below follow the assumptions from the charging-cost guide: 16 kWh/100 km in everyday use, 20 kWh/100 km for motorway ultra-rapid charging. Cold weather raises energy use, but the effect depends on temperature, trip length, heat pump, speed, tyres, wind and preconditioning. A winter-heavy pattern should sit above the "mixed use" line; use your own seasonal consumption rather than a generic maximum-loss percentage.
Annual Energy Budget
Budgets rounded to £50, excluding charging losses or usage while parked.
Fuel price used for the petrol rows above; adjust it to what you actually pay — it's remembered for your next visits.
Mostly home charging
£350 – 900/yr
90% home / 10% highway DC
26 kWh/100mi · 2,500 kWh/yr
Realistic mixed use
£500 – 1,000/yr
70% home / 20% public AC / 10% highway DC
26 kWh/100mi · 2,500 kWh/yr
No home charging
£1,300 – 1,800/yr
60% public AC / 30% DC off-highway / 10% highway DC
26 kWh/100mi · 2,500 kWh/yr
Heavy highway driver
£1,200 – 1,700/yr
50% home / 50% highway DC
29 kWh/100mi · 2,700 kWh/yr
Reference petrol vehicle
£1,500/yr
36 MPG at £1.5/L
43 MPG · 980 L/yr
Reference petrol vehicle
60% highway
£1,700/yr
31 MPG at £1.5/L
38 MPG · 1,130 L/yr
| Annual profile | Charging mix | Consumption / energy | Energy budget |
|---|---|---|---|
| Mostly home charging | 90% home / 10% highway DC | 26 kWh/100mi2,500 kWh/yr | £350 – 900/yr |
| Realistic mixed use | 70% home / 20% public AC / 10% highway DC | 26 kWh/100mi2,500 kWh/yr | £500 – 1,000/yr |
| No home charging | 60% public AC / 30% DC off-highway / 10% highway DC | 26 kWh/100mi2,500 kWh/yr | £1,300 – 1,800/yr |
| Heavy highway driver | 50% home / 50% highway DC | 29 kWh/100mi2,700 kWh/yr | £1,200 – 1,700/yr |
| Reference petrol vehicle | 36 MPG at £1.5/L | 43 MPG980 L/yr | £1,500/yr |
| Reference petrol vehicle60% highway | 31 MPG at £1.5/L | 38 MPG1,130 L/yr | £1,700/yr |
Resale: test three scenarios
The result depends heavily on resale price. Before buying, test at least these three scenarios against comparable listings, not just a theoretical value.
| Scenario | Resale value | Use |
|---|---|---|
| Conservative | Resale value 10 to 20% below your central estimate | Confirms the purchase still makes sense in the worst case |
| Central | Value consistent with comparable listings and planned mileage | Discussion baseline for the calculator |
| Favourable | Stable market, well-documented battery health, sought-after model | Shows the upside, doesn't by itself justify the purchase |
Cash, auto loan, PCP, PCH: compare cleanly
With cash or an auto loan, you carry the depreciation but keep a resale value. With PCP or PCH, depreciation is already priced into payments, with its own handback rules. The right comparison adds up every cash flow over the same period.
| Model | Add up | Subtract or watch |
|---|---|---|
| Cash | Price actually paid, energy, insurance, maintenance, VED | Conservative resale value |
| Auto loan | Deposit, payments, interest, fees, energy, insurance, VED | Resale minus remaining loan balance |
| PCP (Lease-to-Own) | First payment, payments, services, fees, energy | Balloon/buyout if purchased; charges if handed back |
| PCH (Lease) | Deposit, payments, services, energy, insurance | Excess mileage and handback condition |
Key takeaways
An EV's real cost in the UK depends mostly on the price actually paid, resale, and mileage. Charging is rarely the single biggest line, but it explains a large share of the advantage over petrol at high mileage — even after VED now applying at the same standard rate as petrol and diesel cars.
For a clean comparison, keep the same horizon, the same mileage, and three resale values. A calculation that still works in the conservative scenario is far more solid.
Sources and method
Data and rules checked 27 July 2026.
Run the numbers for your own project
The AutoClair simulator compares the net cost of paying cash, an auto loan, a lease-to-own, and a lease over the same term, depreciation included.
Open the simulator →This article is provided for informational and educational purposes. The amounts, rates, and incentives mentioned are indicative and change regularly: verify them with official sources before making any decision. It does not constitute financial advice.