RealCost Guide
Most Expensive Cars to Maintain UK
Some cars are expensive to maintain because they are complex, heavy, premium, high-performance or fitted with specialist parts. Others become expensive because previous owners delayed repairs.
This guide helps you spot the maintenance traps before buying, especially with older luxury cars, large SUVs, performance models, premium EVs and high-mileage diesels.
The simple answer
The most expensive cars to maintain are usually large luxury SUVs, older premium saloons, performance cars, complex diesels, cars with air suspension and premium EVs with expensive tyres, insurance and specialist repair risk.
The biggest trap is buying a car because it has become cheap used, while forgetting that parts, tyres, diagnostics and repair labour may still match the car’s original luxury price.
Calculate maintenance costs before buying
Use the calculator to estimate regular maintenance costs based on servicing, MOT, tyres, repairs, mileage and ownership length.
Use this before buying an older premium car, large SUV, performance model, high-mileage diesel or premium EV.
What makes a car expensive to maintain?
Expensive maintenance usually comes from weight, complexity, specialist parts or neglected history.
Luxury-brand parts can cost far more than mainstream equivalents.
Big wheels and performance tyres can turn routine replacement into a major bill.
Comfort systems can be expensive when they fail.
Diagnostics, sensors, modules and specialist repair time can add up.
Brakes, tyres and servicing are often more expensive on performance versions.
Deferred maintenance can turn a cheap purchase into an expensive recovery job.
Expensive-to-maintain cars and categories to watch
These examples are warning categories, not automatic “never buy” cars. The point is to budget honestly before buying.
Range Rover / Range Rover Sport
Desirable luxury SUVs, but air suspension, electronics, tyres, brakes, diagnostics and specialist repairs can make ownership expensive.
Be careful if: the used price looks affordable but the history is incomplete.
Land Rover Discovery
Practical and capable, but size, weight, suspension, diesel systems, tyres and electronics can all increase maintenance risk.
Be careful if: you do not genuinely need its size, towing ability or off-road capability.
BMW 5 Series
A strong used executive car when maintained well, but suspension, electronics, diesel issues and premium repair labour can raise costs as it ages.
Be careful if: you are stretching your budget and leaving no repair buffer.
Mercedes-Benz E-Class
Comfortable and capable, but diesel systems, electronics, suspension components and premium parts can push repair bills above mainstream cars.
Be careful if: the car is cheap compared with similar examples without a clear reason.
Audi A6
Refined and appealing used, but quattro systems, automatic gearboxes, diesel components and electronics can increase repair complexity.
Be careful if: it has high mileage and limited history.
Jaguar XF
Can offer a lot of luxury for the money used, but parts, electronics, diesel issues and specialist labour can make repairs expensive.
Be careful if: you are buying on price alone rather than condition and history.
Porsche Cayenne
Combines SUV practicality with performance-car hardware. Tyres, brakes, suspension, servicing and repairs can all be expensive.
Be careful if: you want SUV practicality but not performance-car bills.
BMW M / Mercedes-AMG models
Performance versions usually cost more than standard models. Brakes, tyres, servicing, engine parts and insurance are all higher-risk costs.
Be careful if: you are buying the badge without budgeting for performance maintenance.
Premium EVs
Electric cars can have fewer routine service items, but premium EVs can still have expensive tyres, insurance, body repairs and specialist electrical work.
Be careful if: you assume electric automatically means cheap total ownership.
Types of cars that usually cost more to maintain
You do not need to memorise every model. Learn the risk pattern.
Tyres, brakes, suspension and specialist repairs can be costly.
Cheap purchase prices can hide premium repair bills.
Brakes, tyres, servicing and wear items are usually higher cost.
Comfort systems can become expensive when ageing.
Especially risky if used for short trips or poorly maintained.
Routine servicing may be lower, but tyres, diagnostics and specialist repair risk remain.
Older luxury cars: the biggest trap
This is where many used-car buyers get caught.
A car that cost £60,000, £70,000 or more when new may later look affordable used. But tyres, suspension, electronics, parts and diagnostics often stay tied to the original class of car.
That means the purchase price may fall heavily, while maintenance risk stays high.
Used luxury warning: if a car was expensive when new, assume it may still be expensive to repair, even if it is now cheap to buy used.
Maintenance costs people forget
These costs often hurt more than normal servicing.
Large wheels and premium tyre sizes can be expensive to replace.
Heavy cars and performance models can need expensive brake parts.
Air, adaptive or ageing suspension can become a major bill.
Complex electronics can take time and specialist knowledge to diagnose.
Some jobs take longer because access is difficult or specialist tools are needed.
Expensive cars can still lose large amounts of value after you buy them.
Diesel repair traps
Diesels can make sense for high mileage, but the wrong use pattern can be expensive.
Diesels used mainly for short urban journeys can develop emissions-system issues.
Mileage is not automatically bad, but missing maintenance evidence is risky.
Expensive faults can appear if servicing has been neglected.
Fuel savings can be wiped out by one major repair.
How to avoid buying a maintenance money pit
This is the practical checklist before you commit.
Useful next step: use the Used Car Buying Checklist UK before viewing a high-risk car.
When an expensive car can still make sense
This is not about pretending every expensive car is bad. It is about being honest.
A more expensive car can still make sense if you genuinely value comfort, towing ability, performance, space, luxury or specialist features.
The mistake is buying one with a small-car maintenance budget. If the car is premium, heavy, complex or performance-focused, your repair buffer needs to match.
How to estimate maintenance before buying
Do this before you let the badge or monthly payment convince you.
Useful maintenance cost calculators
Use these before buying a high-risk car.
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Related maintenance and used-car guides
Use these before choosing a car that could become expensive to keep.
Used Car Buying Checklist UK
Check history, tyres, brakes, warning lights and seller red flags.
Most Expensive Cars to Run UK
Compare maintenance risk with insurance, fuel and depreciation.