RealCost Guide
Average Cost of Running a Car UK
The average cost of running a car in the UK is not just fuel. Insurance, road tax, servicing, MOT, tyres, repairs, parking and depreciation can all change what a car really costs.
Use this guide to understand the main running costs, why the average changes so much, and how to estimate your own monthly and yearly car budget properly.
The simple answer
The average cost of running a car depends on the car, driver, mileage and where it is used. A realistic running-cost estimate should include fuel or charging, insurance, road tax, servicing, MOT, tyres, repairs, parking and depreciation.
A car with low fuel costs can still be expensive if insurance, tyres, depreciation or repairs are high. A cheap car can also become expensive if maintenance has been ignored.
Calculate your car running costs
Use the Car Cost Calculator to estimate your monthly and yearly running costs, including fuel or charging, insurance, road tax, maintenance, repairs, parking, depreciation and other regular costs.
Use this before buying, changing car, comparing petrol vs electric, or setting a realistic monthly car budget.
Quick answer: there is no single average running cost that fits every UK driver. The safest approach is to estimate each cost separately, then add them together. Fuel or charging, insurance, maintenance and depreciation are usually the areas that change the result most.
What counts as running a car?
For a useful estimate, include the costs that keep the car usable, legal and affordable over time.
Mileage, MPG, miles per kWh and energy prices decide this cost.
A major cost that can vary heavily by driver, postcode, car and claims history.
A yearly cost that should be included before comparing cars.
Routine costs that keep the car legal, safe and reliable.
Wear-and-tear and unexpected repairs can change the budget quickly.
Value loss is not a monthly bill, but it is still part of the true running picture.
Running costs vs ownership costs
This is where car costs get confusing.
Running costs
The costs of using and keeping the car on the road, such as fuel, insurance, tax, servicing, MOT, tyres, parking and repairs.
Ownership costs
The wider cost of owning the car, including depreciation, finance interest, value loss and the money tied up in the vehicle.
RealCost view: for real-world decisions, include both. A car that is cheap to fuel can still be expensive to own if depreciation, insurance or repairs are high.
Example average running-cost scenarios
These examples show how car type and mileage change the answer. Use your own numbers for a proper result.
Low-mileage small car
Fuel may be modest, but insurance, tax, MOT and servicing still need budgeting even if the car is barely used.
Regular family car
Fuel, insurance, servicing, tyres, tax and depreciation can combine into a larger yearly cost than expected.
High-mileage or premium car
Higher mileage, large tyres, premium parts, depreciation and repair risk can make the running cost much higher.
Why the average changes so much
Average running cost is only useful when the assumptions match your car and mileage.
Monthly vs yearly running costs
You need both views to avoid being caught out.
Monthly view
Best for checking whether the car fits your income, bills and savings buffer.
Yearly view
Best for seeing insurance renewal, road tax, MOT work, servicing, tyres and annual repair risk.
The costs that usually move the result most
Do not spend too long estimating tiny costs while ignoring the big ones.
Fuel or charging
High mileage makes this one of the biggest running costs, especially with poor MPG or expensive public charging.
Insurance
Insurance can dominate the budget for young drivers, higher-risk cars or expensive postcodes.
Depreciation
Depreciation can outweigh fuel savings if the car loses a lot of value while you own it.
How to reduce the cost of running a car
Cut costs without making a false economy.
How this page is different from related running-cost pages
This page is the average running-cost explainer. Other pages go deeper into specific budgeting views.
Explains average car running costs and why the total changes by driver, car and mileage.
The main detailed running-cost guide for ongoing ownership costs.
Focuses on the full 12-month ownership cost and annual bills.
Useful running-cost calculators and guides
Use these to break the running cost into clearer parts.
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