RealCost Guide
Average Cost of Owning a Car Per Month UK
The monthly cost of owning a car in the UK is often higher than the payment, fuel or insurance alone. A realistic monthly budget should include fuel or charging, insurance, tax, servicing, MOT, tyres, repairs, parking and depreciation.
Use this guide to build a monthly car budget instead of guessing from one obvious cost. The calculator helps you turn yearly and irregular costs into a monthly figure.
Calculate your monthly car ownership cost
Use the Car Cost Calculator to estimate the monthly and yearly cost of owning your car. Include fuel, insurance, tax, maintenance, depreciation and any regular extras so the result is not artificially low.
This calculator is for budgeting. It cannot predict every repair, insurance renewal, MOT failure or future fuel price, so leave a sensible monthly buffer.
Quick answer: A realistic monthly car ownership cost can vary massively. A cheap, low-mileage car may cost a few hundred pounds per month once everything is included, while a newer, larger, financed, high-mileage or expensive-to-insure car can cost much more.
Do not budget from fuel alone
Many drivers think they know their monthly car cost because they know roughly how much fuel they use. That is not enough.
Insurance, servicing, tyres, repairs, tax and depreciation can easily turn a car that looks affordable into one that strains the budget.
What should you include in monthly car ownership cost?
A proper monthly car budget includes costs you pay monthly, yearly and irregularly.
Fuel or charging
Your mileage, MPG, petrol price, diesel price or electricity price can change the monthly total quickly.
Insurance
Insurance can be a major monthly cost, especially for new drivers, young drivers, higher-risk cars or expensive-to-repair models.
Road tax
Divide annual vehicle tax by 12 so it appears in your monthly budget instead of arriving as a surprise.
Maintenance and repairs
Servicing, MOT repairs, brakes, suspension, bulbs, fluids and unexpected faults should be budgeted monthly.
Tyres
Tyres are often forgotten until they need replacing. Larger wheels and heavier cars can make this painful.
Depreciation
Depreciation is not a monthly bill, but it is still a real monthly loss in the value of the car.
Example monthly car ownership budgets
These are example budget profiles, not guaranteed national averages. Your real cost depends on your car, mileage, insurance and repair risk.
Lower-cost ownership
Usually a small, reliable, low-insurance car with modest mileage and sensible tyres.
Typical budget aim: keep every cost visible before buying.
Average family or commuter car
Fuel, insurance, tyres, servicing and depreciation all matter. This is where monthly budgeting becomes important.
Typical budget risk: underestimating irregular costs.
Higher-cost ownership
Often newer, larger, premium, high-mileage, financed or expensive-to-insure cars.
Typical budget risk: payment looks affordable, total cost does not.
Why monthly car cost is easy to underestimate
The problem is timing. Some costs are obvious every week, while others only appear once or twice a year.
Fuel feels like the main cost
You notice fuel because you pay it often. That does not mean it is the biggest cost.
Annual bills get ignored
Tax, servicing, tyres, MOT work and breakdown cover should be divided by 12 in your budget.
Depreciation is invisible
You do not pay depreciation at the pump, but you feel it when you sell, trade in or settle finance.
How to build a monthly car budget properly
Do this before buying a car, not after the first expensive surprise.
How this page is different from related RealCost pages
This page focuses on monthly budgeting, so it does not duplicate the broader ownership pages.
Monthly car ownership budgeting and what to include in the monthly figure.
Practical ongoing running costs once you own or are about to own the car.
The costs people forget or underestimate before buying or budgeting.
Useful calculators and guides
Use these next to calculate the parts of your monthly car cost properly.
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