What Is The Hardest Thing To Fix On A Car?  

Fewer people these days are choosing to repair their own cars, instead of wisely choosing to bring their vehicles to a car service technician. This is partly due to the complexity of automobiles in today’s world, while cars thirty years ago could be repaired by most car owners handy with tools and a bit of car knowledge. After surveying a variety of testimonials from automotive mechanics, they were widely claimed to be the most difficult car repairs to perform. If you decide to undergo an auto mechanic apprenticeship, you might want to keep these four challenging repairs in mind for the future.


As a “wear and tear” part in a vehicle, the clutch may need to be replaced as often as every 30,000 km, depending on your handling. The less common reason for repairing the clutch is the improper fitting resulting in oil leakage. Repairing the clutch involves removing the transmission, which is what makes it so difficult to repair.

Spark Plugs

The spark plug is responsible for the ignition of the gas vapors and the operation of the engine. While the spark plug is not an expensive repair, it is a necessary one as the spark plugs are often worn with use. The difficulty lies in their small size, coupled with the fact that they are known to be found nestled in the areas of a car that are hard to reach. Some engine compartments are more crammed than others, so depending on your car, this could end up being a simple repair, or I Spy’s two-hour game.


Transmission repairs are known to be expensive, so mechanics may find that some customers are reluctant to address these issues until they are at a crisis stage. Leaking transmission fluid is the easiest way to know that something isn’t right. Manually, problems with gear changes may arise from low transmission fluids or incorrectly adjusted shift cables or clutch connections. The overheating fluid, the slipping gear and the dreaded dragging clutch all require professional attention.

Engine Replacement

People who have experienced the agony of replacing the engine, whether it’s your average Joe or a certified auto technician, will say that this is the biggest challenge in any car. Cars are expensive, and you can change your engine instead of buying a whole new vehicle. Powering your car with a company remanufactured engine is, in many cases, the most cost-effective long-term option for your vehicle. While the cost may be between $2,000 and 4,000, this is only about 10-20 percent of the cost of buying a new vehicle. Repair, however, is not as simple as falling into a new engine (which, in itself, is a difficult procedure). Depending on the amount of mileage racked up on your old engine, you may need to replace some of the connecting parts which have also accumulated mileage, such as the transmission.

Repairing Or Recharging An Air Conditioner

Setting aside the thorny issues involving Freon for now, working with the A / C system still involves very specific high pressures and lots of tubing and odd components (some of which are hopelessly buried in a dash or linked to a computer) and other tangential issues related to the first law of thermodynamics. If you just had to go look up the first thermodynamics law, you probably don’t have any business in there.

Body Work

There is a reason that Bondo is still available despite the revulsion associated with that word, and that’s because bodywork is classically hard: demanding, intolerance to minor mistakes, often physically hard. The handling of sheet metal is a fine art. If you want to make it look right, find someone who can make it look right. If you’re an old batter, go nuts with your sledgehammer.

Straightening A Frame

Provided that a tweaked frame does not result in a car being a complete write-off, getting it straightened again requires massive amounts of force to be directed in very accurate directions. Beyond the reach of someone who’s not willing to pony up for a huge, expensive machine, you hope you’ll never have to use it more than once, if at all. This is the most unrealistic home repair job on this list.

Are You Looking for an Independent Auto Repair Shop you Can Trust?

If you’re considering making a change to an independent auto repair mechanic trusted by thousands of happy customers, look no further than autoTECH Blackhawk. Why? We differ from other automotive repair stops because we are a relationship shop. This means that the more of your car repair needs we support you with, the better able we are to customize our recommendations based on your driving habits and needs. Whether you want to keep the daily driver in ‘good enough’ condition, style your new car so that it’s customized just for you, maintain your favorite car in ‘like new’ condition, or even train your whole family to be more knowledgeable about cars – we partner with you to ensure that your cars meet your needs. We also offer an industry-leading 3-Year/36,000 mile warranty, so we only use Original Equipment and manufacturer recommended products. Contact us now to book your no-contact, friendly appointment! We truly value your trust and your business, so thank you for staying local with your auto repair needs.