The Real Cost of Running a Car in the UK

What counts as the cost of running a car?

Running costs are the regular bills to keep a car on the road: fuel, insurance, vehicle excise duty (road tax), MOT, servicing, tyres, breakdown cover and parking. They do not include the purchase price or finance payments — and they do not include depreciation, the value the car loses each year.

Most UK households underestimate running costs because they notice fuel at the pump but forget annual insurance and the MOT. Adding everything up once a year — or per mile — makes car ownership easier to budget for and easier to compare against public transport or a different vehicle.

Fuel: usually the largest running bill

Fuel cost depends on how far you drive, your car's fuel economy (miles per gallon) and the price per litre. At 8,000 miles a year, 45 mpg and 145p per litre, you use about 808 litres and spend roughly £1,170 on fuel.

Higher mileage or a thirstier car pushes fuel up fast. At 12,000 miles and 35 mpg with the same fuel price, fuel alone is about £2,260 a year — nearly double. Motorway driving and short cold starts both worsen real-world mpg compared with the official figure.

Insurance: the fixed cost that varies most

Comprehensive car insurance in the UK typically costs £500–£900 a year for many drivers, but young drivers, high-value cars and postcodes with higher claim rates can pay £1,500 or more. It is usually paid monthly or as one annual lump sum.

Your no-claims discount, voluntary excess, mileage declaration and optional add-ons (legal cover, courtesy car) all change the premium. Always compare renewal quotes — loyalty rarely pays.

Road tax (VED) and the MOT

Most petrol and diesel cars registered after April 2017 pay a standard rate of £190 a year in vehicle excise duty (VED), plus a higher first-year rate based on CO₂ emissions when the car was new. Exact bands are on GOV.UK.

The MOT test is a separate legal requirement once a car is three years old. The maximum test fee is £54.85 for a car; if repairs are needed, that is extra. Budget for both VED and MOT as fixed annual costs in your running-cost total.

• Electric cars: lower or zero VED for many models, but rules change — check GOV.UK for your registration date.
• Classic cars over 40 years old may be exempt from MOT and VED in some cases.
• SORN (Statutory Off Road Notification) if you are not driving — no VED, but no driving on public roads either.

Servicing, tyres and repairs

A basic annual service — oil, filters, checks — often costs £150–£300 at an independent garage, more at a main dealer. Tyres wear with mileage; budgeting £300–£500 every few years (or £100–£150 a year averaged) is sensible for a typical hatchback.

Older cars need more repairs. A £500 'maintenance' line in your budget covers servicing plus a buffer for brakes, batteries and unexpected fixes. Skipping servicing saves money short term but can increase breakdown risk and reduce resale value.

Other costs people forget

Parking permits, workplace parking, congestion charges (London ULEZ and CC), tolls, car washes and breakdown cover all belong in 'other' running costs if you pay them regularly. A £120 annual breakdown policy is cheap compared with a single motorway tow.

If you use the car for work, you may be able to claim tax relief on business mileage at HMRC approved rates — see our Mileage Allowance guide. That does not reduce running costs, but it can offset them.

Worked example: typical UK running costs

Take a driver covering 8,000 miles a year in a medium hatchback doing 45 mpg, with fuel at 145p/litre, insurance £700, road tax £190 and maintenance £500 (servicing, MOT and a tyre buffer). Total running cost is about £2,560 a year — £213 a month and 32p per mile.

That figure excludes finance, depreciation and the purchase price. If you also pay £250 a month on a car loan, your total motoring outlay is closer to £463 a month even though only £213 is 'running' cost.

Petrol, diesel and electric: how running costs compare

Petrol and diesel differ mainly on fuel economy and fuel price per litre — diesel often does more miles per gallon but can cost more at the pump. For low-mileage drivers, a efficient petrol car is often cheaper overall.

Electric cars (EVs) usually cost less per mile to 'fuel' if you charge at home on a off-peak tariff, and VED is often lower. Insurance and purchase price can be higher, and public rapid charging is expensive. Compare cost per mile over your actual annual mileage, not just the sticker price.

• Petrol: widely available, simpler mechanics, often higher mpg on small cars.
• Diesel: better for high motorway mileage; higher VED on some older models.
• Electric: low pence-per-mile at home; plan for charging on longer trips.
• Hybrid: strong mpg in town; complexity and battery age matter on used buys.

Depreciation: the hidden cost

Depreciation — the fall in your car's market value — is often the single biggest cost of ownership, especially on new cars. A new £25,000 car might lose £5,000–£8,000 in value in its first year alone. Our calculator focuses on cash running bills, not depreciation.

Buying a three- to five-year-old car cuts the depreciation hit sharply. If you only need reliable transport, a older car with low running costs can beat a new finance deal on total cost — even if fuel and maintenance are slightly higher.

How to cut your car running costs

Drive smoothly and keep tyres inflated to improve mpg. Remove roof boxes and excess weight. Combine errands into one trip so the engine stays warm. Shop insurance every year and consider a higher voluntary excess if you can afford the risk.

For low mileage, pay-as-you-go insurance or a second-hand efficient car may beat keeping a expensive vehicle on the driveway. If running costs exceed public transport plus occasional car hire, the maths may favour going car-free — but only if the alternative works where you live.

Calculate your cost per mile

Add fuel, insurance, road tax, servicing and any regular extras, then divide by your annual mileage. That cost-per-mile figure lets you compare cars, decide whether a job's commute pays, and budget in the Direct Debit Budget Planner alongside rent and bills.

Use our Car Running Cost Calculator — enter your mileage, mpg, fuel price and fixed costs to see your total annual and monthly running cost and pence per mile instantly.