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DIY Auto Repair More Auto Information

The Most Expensive Parts of the Car to Repair

In 2010, there were over one billion cars around the world. 

Cars are one of the most popular modes of transportation, but buying and maintaining a car can be really expensive. 

All automobile repair costs were not created equal and some can cost you more than the car is worth. These are the most expensive parts of the car.

Air Conditioning Compressor

If you live somewhere in the Southern United States, you know an air conditioning compressor is one of the most important parts of the car. 

It can be miserable driving around without AC, and the compressor regulates the air pressure so that the freon can be used to make sure that your car remains cool.

If this part gives out, it could cost you around $500. 

Brake Line Repair

We’re sure you’ve seen those movies where someone’s car had their brake lines cut, making their brakes useless. 

Someone may not have cut your brake line, but it could be damaged or need to be replaced. If this part of the car isn’t working, then your brakes won’t properly work, meaning it’s not safe to drive your car.

If this happens, you will either need to get it towed or push the car somewhere to get it fixed to make sure you are safe. When this part wears down or breaks, you are looking at about a $1000 repair. 

Fuel Pump

The fuel pump is also an expensive part that you don’t want to have to fix. 

This part makes sure that there is enough pressure in the injector of the engine. This part will wear down over time because of the particles that are found in low-quality fuel. 

The fuel pump itself probably only costs around $400 to $800, but when you factor in labor laws, you could be looking at paying over $1,000. 

If you have an older car, you will probably have to change it after you hit the 100,000-mile mark. 

Head Gasket

If your car is blowing smoke, oil, or coolant into the air, your head gasket was probably damaged. You really can’t drive without getting it repaired, but it may cost you.

The part itself doesn’t cost very much, but it can be difficult to get to and repair, which means that with everything included, it will probably be about $2,000. 

Engine Control Unit

The Engine Control Unit is the part the makes sure all of the electronics in your car are working. It also takes information from different sensors, so it’s responsible for things like the air/fuel ratio, the ignition, and even idle speed.

If this part of your car isn’t working, then other functions of your car may stop working as well. You will be able to tell if your ECU is broken because the check engine light may come on. The car could also refuse to start, or the engine could stall. 

Common causes of the ECU to stop working is from having internal or water damage. This is why you should make sure that your engine doesn’t come into contact with water. 

A new unit could cost you anywhere from $550 to $1700 to replace and have installed by a professional. 

Car Transmissions

Car transmissions are one of the most expensive parts to replace, without even factoring in the labor costs. This could cost anywhere from $1,000 to $4,000 to replace. 

If you are thinking about buying a used car, you should check to see what kind of condition the transmission is in. If it’s not great, you could end up paying more in the long run when you have to replace it. 

This is just one way to make sure that you don’t overspend and end up saving some money. There are plenty of other ways as well, and you can learn more here. 


Airbags are designed to keep you safe, but if you were in an accident and they went off, you will need to replace them. You should replace them as soon as possible too in case you get into another accident.

Aside from the two airbags in the front, there are also ones on the sides and lower in the car as well. How many airbags you have installed in your car will determine how much it costs to replace them. 

With labor factored in, it could cost anywhere from $3,000 to $5,000 to have them replaced by a professional. 


The suspension in your car makes sure that you don’t feel every little bump in the road. You want your ride to be as smooth as possible, after all, so you aren’t flung around the entire ride.

If something is wrong with your suspension, you will definitely need to replace that. Unfortunately, it could cost anywhere from $2,500 to $3,500 to replace. Your passengers will thank you in the long run. 

Camshaft Replacement

A camshaft controls how much air the engine takes in. This part normally doesn’t break if you are keeping up with your daily maintenance, like getting your oil changed. If your oil doesn’t get changed, the dirt will start to build up on the valves.

This part takes a lot of labor to install, so it could cost you anywhere from $1,500 to $3,000. 

It’s cheaper just to take your car in for the routine oil changes instead.


Finally, the engine is one of the most crucial parts of the car. Without the engine, the car is just a metal frame that doesn’t go anywhere. 

There are all kinds of reasons your engine could stop working, but it is more likely to happen in older cars. This is why it’s important to be careful when you are buying used cars. 

An engine could take anywhere from $7,000 to $10,000

Lastly, one of the most expensive parts of the car is the engine because, without an engine, a car won’t work. 

Repair These Parts of the Car Today!

These parts of the car can be expensive, but some of them are necessary to make sure that your car runs and is safe as well.

While it may seem cheaper to fix some of these parts on your own, you should only do it if you are a professional because you could damage your car even further.

If you’re not a professional, take your car in to repair these parts today!