When most people think about the cost of a car, they think about three things: the purchase price, fuel, and insurance. But the reality is that car ownership involves a long list of additional costs that can add up to thousands of pounds per year. Many of these are predictable if you know what to look for, and some are avoidable entirely.
This guide covers every significant cost of car ownership in the UK, including the ones that rarely appear in car reviews or buying guides. By the time you finish reading, you will have a realistic picture of what any car will actually cost to own.
Depreciation: The Biggest Cost Nobody Talks About
Depreciation is the single largest cost of car ownership for most drivers, yet it is almost never discussed in "running costs" articles because it is not a bill that arrives in the post. It is the difference between what you pay for a car and what you sell it for.
Here are some general depreciation patterns:
- New cars: Lose 15% to 35% of their value in the first year alone. A new car costing £25,000 could be worth £17,000 to £21,000 after just 12 months.
- 1 to 3 years old: Continue to lose 10% to 15% per year.
- 3 to 5 years old: Depreciation slows to 7% to 12% per year.
- 5 to 8 years old: The "sweet spot" for used car buyers. Depreciation is typically 5% to 8% per year, and the car still has plenty of life left.
- 8+ years old: Depreciation slows further to 3% to 5% per year, and some models hold value well.
Cars that hold their value best include Toyota (especially the Land Cruiser and GR Yaris), Porsche, and Land Rover Defender. Cars that depreciate fastest include French brands, some Korean models, and anything with a diesel engine under 3 years old.
The lesson: buying a car at 3 to 5 years old with reasonable mileage avoids the steepest depreciation cliff while still getting a car with plenty of life ahead of it.
MOT Costs and Repairs
The MOT test itself costs a fixed £54.85 (or less at some garages that use it as a loss leader). But the MOT is not really the cost; it is the repairs needed to pass the MOT that can be eye-watering.
Common MOT repairs and their typical costs:
| Repair | Cost Range | How Common |
|---|---|---|
| Brake pads (pair) | £60 - £120 | Very common after 30,000 miles |
| Brake discs and pads (pair) | £150 - £350 | Common after 40,000 miles |
| Shock absorbers (pair) | £200 - £400 | Common after 60,000 miles |
| Exhaust repair/replacement | £150 - £800 | Common on older cars |
| Catalytic converter | £400 - £1,500 | Emissions failures on older cars |
| Tyres (set of 4) | £240 - £600 | Every 20,000 - 30,000 miles |
| Anti-roll bar links | £80 - £200 | Common, especially on rough roads |
| Wheel bearing | £100 - £300 | Wear item, varies by model |
| CV boot/joint | £80 - £250 | Common on high-mileage cars |
| Suspension arm/bush | £120 - £400 | Age and mileage dependent |
You can predict many of these costs by checking the car's MOT advisory history. Advisories tell you what is wearing but has not yet failed, giving you a preview of upcoming repair bills. Our free car check tool analyses this data automatically and gives you a predicted annual repair cost based on the specific car's history.
Servicing
Regular servicing is not legally required, but skipping it will accelerate wear, void any remaining warranty, and reduce the car's resale value. Typical servicing costs:
- Basic service (oil and filter): £80 to £150 at an independent garage, £150 to £250 at a main dealer
- Full service: £150 to £300 at an independent, £250 to £450 at a main dealer
- Major service: £250 to £500 at an independent, £400 to £700 at a main dealer (includes timing belt check, brake fluid, coolant, spark plugs)
Most cars need a service every 12 months or 10,000 to 12,000 miles, whichever comes first. Using an independent garage rather than a main dealer can save 30% to 50% without affecting quality, as long as the correct parts and oils are used.
Timing Belt Replacement
This is a major hidden cost that catches many owners off guard. If your car has a timing belt (rather than a timing chain), it needs replacing at a specific interval, typically every 4 to 6 years or 60,000 to 100,000 miles. The cost ranges from £300 for a simple belt on a small car to £800+ for a belt-and-water-pump kit on a larger engine.
If the timing belt snaps, the engine is usually destroyed. Replacement cost for a new engine: £2,000 to £5,000+. This is why timing belt replacement is not optional; it is one of the most important scheduled maintenance items.
Cars with timing chains (many Toyota, Honda, BMW, and Mercedes models) do not need this service, which is a significant long-term cost advantage.
Road Tax (VED)
Road tax costs depend on when the car was first registered:
- Registered before 1 March 2001: Based on engine size. Under 1549cc costs £200/year, over 1549cc costs £325/year.
- Registered 1 March 2001 to 31 March 2017: Based on CO2 emissions. Ranges from £0 (Band A, under 100g/km) to £695+ (Band M, over 255g/km).
- Registered from 1 April 2017: Flat rate of £190/year for petrol and diesel cars. Electric cars were £0 but this is changing to £190 from April 2025.
- Cars with a list price over £40,000 when new: Pay an additional £410/year for the first 5 years (so £600/year total). This catches some surprisingly mainstream cars like certain BMW 3 Series, Audi A4, and Mercedes C-Class specifications.
Parking
Parking costs vary wildly depending on where you live:
- Residential parking permit: £0 to £300+/year depending on the council area. Inner London boroughs charge the most.
- Workplace parking: Free at most workplaces outside city centres, but can cost £100+/month in central London, Manchester, or Birmingham.
- Daily parking: Town centre car parks typically cost £3 to £12/day. Hospital parking is notoriously expensive.
- Airport parking: £50 to £150 per week at major airports.
Congestion and Clean Air Charges
If you drive into or through certain city centres, you may face daily charges:
- London Congestion Charge: £15/day (Mon-Fri 7am-6pm, Sat-Sun 12pm-6pm in central London). That is £3,900/year for daily commuters.
- London ULEZ: £12.50/day for non-compliant vehicles (generally pre-Euro 4 petrol or pre-Euro 6 diesel). Covers all London boroughs.
- Clean Air Zones (CAZ): Birmingham, Bath, Bradford, Bristol, and other cities charge non-compliant vehicles £8 to £12/day.
Before buying a car, check whether it is ULEZ and CAZ compliant if you will be driving in affected areas. Most petrol cars from 2006 onwards and diesel cars from 2015 onwards are compliant.
Breakdown Cover
Breakdown cover is not compulsory, but being stranded without it can be expensive (a single callout without cover typically costs £100 to £200+). Annual breakdown cover costs:
- Basic roadside assistance: £30 to £60/year
- National recovery (home and relay): £60 to £120/year
- European cover: £80 to £150/year
Providers include the AA, RAC, Green Flag, and Start Rescue. Cover through your bank account or credit card may also be available.
Cleaning and Maintenance
These small, regular costs add up over a year:
- Car wash: £8 to £15 per wash, or £5 to £10 for an automatic wash. If you wash your car fortnightly, that is £130 to £390/year.
- Screen wash: £2 to £5 per bottle, 3 to 4 bottles per year.
- Air fresheners: £2 to £5 every few months.
- Number plate replacement: If a plate cracks or fades, budget £20 to £30.
- Wiper blades: £10 to £30 per set, replaced annually or when they start smearing.
Finance Costs
If you are buying on finance (PCP, HP, or a personal loan), the interest charges are a significant hidden cost:
- PCP (Personal Contract Purchase): Typical APR of 5% to 9%. On a £15,000 car over 4 years, you might pay £2,000 to £3,500 in interest alone.
- HP (Hire Purchase): Similar rates to PCP, but you own the car at the end. Total interest paid is usually higher because the monthly payments are larger.
- Personal loan: Often the cheapest option at 3% to 6% APR from banks, but requires good credit.
The cheapest way to buy a car is always cash or a 0% credit card (for smaller amounts). If you must use finance, shop around and use the total amount payable (not just the monthly payment) as your comparison metric.
Total Annual Cost: Putting It All Together
Here is a realistic annual cost breakdown for three different types of car owner:
Budget Car (5-year-old Vauxhall Corsa 1.2, bought for £6,000)
| Cost | Annual |
|---|---|
| Depreciation | £600 |
| Insurance | £800 |
| Fuel (7,400 miles) | £900 |
| Road Tax | £190 |
| MOT + Repairs | £350 |
| Servicing | £150 |
| Tyres | £100 |
| Other (parking, wash, etc.) | £200 |
| Total | £3,290/year (£274/month) |
Mid-Range Car (3-year-old VW Golf 1.5 TSI, bought for £18,000)
| Cost | Annual |
|---|---|
| Depreciation | £2,000 |
| Insurance | £900 |
| Fuel (10,000 miles) | £1,300 |
| Road Tax | £190 |
| MOT + Repairs | £250 |
| Servicing | £250 |
| Tyres | £150 |
| Other (parking, wash, etc.) | £300 |
| Total | £5,340/year (£445/month) |
Premium Car (2-year-old BMW 3 Series 320d, bought for £30,000)
| Cost | Annual |
|---|---|
| Depreciation | £3,500 |
| Insurance | £1,200 |
| Fuel (12,000 miles) | £1,500 |
| Road Tax | £190 |
| MOT + Repairs | £400 |
| Servicing | £400 |
| Tyres | £250 |
| Other (parking, wash, etc.) | £400 |
| Total | £7,840/year (£653/month) |
How to Reduce the Total Cost
Here are the most effective ways to cut your overall car ownership costs:
- Buy at the depreciation sweet spot (3 to 5 years old). You avoid the steepest depreciation and still get a relatively modern car.
- Choose a reliable make and model. Check our reliability rankings before buying. A reliable car saves money on repairs, MOT costs, and breakdown stress.
- Use independent garages for servicing. Main dealer servicing is rarely worth the premium unless the car is under warranty.
- Shop around for insurance annually. Never auto-renew.
- Maintain the car properly. Skipping services costs more in the long run through accelerated wear and lower resale value.
- Check any car before buying. Use our free car check tool to see the MOT history, health score, and predicted running costs for any UK car before you commit.
For detailed running costs on any specific make and model, visit our running costs by model pages, where we show fuel costs, tax, MOT pass rates, and estimated repair costs based on millions of real MOT tests.