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What your car really costs per mile

Fuel is only part of it. Enter your own figures and see the whole bill — then test what driving less, or a thriftier car, would actually save.

What does it run on?

Fuel price (p per litre)

RAC UK average, 2 Oct 2026: petrol 174.71p, diesel 200.01p.

Your real mpg

Use the trip computer, not the brochure.

Miles a year

Your last two MOT certificates show the mileage a year apart.

Vehicle tax (VED) a year

Standard rate 2026/27: £200. Check your own on your V5C or gov.uk.

Insurance a year

From your renewal letter. We don't guess this.

MOT a year

Legal maximum £54.85; many garages charge less.

Servicing and repairs a year

Which? owner survey average for a 5–9-year-old petrol car.

Tyres a year

About two mid-range tyres a year at typical mileage.

Parking and tolls a year

Finance or loan payment a month (optional)

Whatever you pay each month, if anything. Leave at £0 if the car is paid for.

What the car is worth today

A rough private-sale figure is fine.

Age of car (sets depreciation)

What if…

Every mile costs you

All in, including depreciation

£0 a month · £0 a year

This is a guide, not financial advice. Fuel is worked out from your mpg and the price you enter (one gallon is 4.546 litres). Depreciation uses a simple yearly rate for the age band you pick — real values depend on the car. Insurance and any finance payment are whatever you type in; we don't estimate or compare them. Nothing you enter leaves this page.

Read the guide: The real cost of running your car — and the cheapest way to cut it · All tools