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Need to take your car in garage can be an expensive process on its own, but can get worse if a particular part has failed and needs to be replaced.

car leasing company has compiled seven of a car’s most expensive components to replace, to arm drivers with the right knowledge.

A spokesperson for said, “There’s nothing worse than spending your day on a car trip only for something to go wrong and lead to an unexpected breakdown.

“Drivers with mechanical knowledge can instantly tell what has stopped working, but for many it’s impossible to tell what happened under the hood until they take it to a garage.

There are certain parts of a car that are more expensive to replace than others (PA)

“Regular maintenance can help keep an eye out for signs of wear and tear, but the simple fact is that most of us don’t have much spare cash for expensive car repairsso it helps to know which are the most likely – and expensive – auto parts that can go bad.

What are the most expensive car parts to replace?

cylinder head gasket

The role of the cylinder head gasket is to separate the combustion chambers, the oil and cooling systems. If it fails, it can lead to dramatic symptoms such as blue smoke coming from the exhaust and the possibility of oil and water entering the cylinders.

The cost is lower on the car part itself, but the labor and skill required to replace it as it is a fairly complex mechanical process.


learner drivers they are often told to avoid bad habits such as “getting on the clutch” while on the road, as this can cause unnecessary wear and tear.

Replacing a clutch assembly can cost upwards of £1000, but given the huge amount of gear changes that occur in the life of a manual car, this cost can often be anticipated after a certain number of kilometers traveled.

ECU Replacement

With much of our modern cars relying on electronic systems – be it for windows, climate control or other things, one item you want to be reliable at all times is the ECU (Engine Control Unit). ).

This can provide an unexpectedly high bill to pay if things go wrong in the car, and although they are designed and manufactured to last for years, like anything, they can go wrong.

Catalytic converter

It can be very expensive to replace, as it contains specialized materials such as palladium, rhodium and gold.

Although it’s designed to keep working for the life of the car, if it goes bad and needs to be replaced, you face a hefty bill.

Bradford Telegraph and Argus: replacing a catalytic converter will be very expensive (PA)Replacing a catalytic converter will be very expensive (PA)

Timing belt

People are often advised to have this auto part replaced by a mechanic during a routine check, even though it may appear to be working perfectly fine.

It is essential to the proper functioning of the vehicle, connecting the crankshaft at the base of the engine to the camshaft at the top, but if it begins to slip it can cause costly internal engine damage.


If you start your car and the ignition doesn’t work, it’s common to assume that you might have a dead battery, especially if the car has been sitting idle for a while.

However, a closer inspection at the garage, once the car has been transported there, might determine that a more expensive repair is needed if it is a faulty starter instead.


If you drive a lot of miles, the alternator is one of the most expensive auto parts that can fail after driving thousands of miles.

If it fails, it means that the entire electrical system of the car also fails and will cost the motorist a four-figure sum to replace, unless he opts for a second-hand alternator less expensive instead.

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