How much does alternator repair cost?

Most modern vehicles with a combustion engine come with an alternator. Contrary to popular belief, your car's electronics are powered by the alternator, not your car battery. The battery only starts the vehicle, but the alternator powers everything and recharges your battery while operating your car. 

Car alternator repair isn't as pricey as other major automotive repairs, as long as you address it immediately. On average, alternator repair costs in the UK range from £300 to  £700, including parts and labour. 

Signs that an alternator needs repair

You don't need to be a car enthusiast to know when to replace or repair your alternator. If you suspect that something's wrong with your alternator, here's what you can look out for:

1. Difficulty in starting your car

You might first attribute this to your battery. But if your battery checks out and you still experience difficulty starting your car, it might be your alternator. Having a mechanic look at your vehicle is probably a good idea.

2. Flickering headlights

One of the signs of a faulty alternator is flickering headlights. A healthy, working alternator keeps your lights bright and steady. As you drive, you might notice your headlights grow brighter or dimmer depending on the speed of your vehicle. 

3. Strange engine noises 

Just like any moving component of your car, the alternator will make a strange noise if it's broken. A grinding sound might indicate a worn bearing, which means that your alternator will go bad soon. You might also hear whining sounds, which means a faulty voltage regulator.

4. Failing electronics

If you start to notice your electronics fail or work slower, it's time to get a quote for alternator repair and labour costs. Your failing alternator can manifest through slow-moving power windows and windshield wipers, as well as broken power locks and entertainment systems.

5. A weak or dead battery

If you start encountering battery issues, a light will appear on your dashboard. Try replacing the battery first. It might just be your battery aging normally. Remember that the alternator charges your battery. If you still encounter a weak or dead battery even after replacement, your car likely has a failing alternator. 

Alternator repair price list

How much does it cost to fix an alternator? It greatly depends on the make of your car. We've gathered the estimated cost of fixing alternators for some prominent brands:

Factors affecting alternator repair costs

Car make and model

Getting an alternator built specifically for your car's make and model is best. This ensures it can be mounted properly and handle all your existing electronics. Expect higher alternator replacement costs for more expensive car brands or models.

Electrical capacity

Alternators with the standard electrical capacity to power your vehicle will generally cost less than those with higher electrical capacity. High-capacity alternators are used only for cars that have been modified with more sophisticated, energy-consuming electronics. 

Alternator mounting style

The location of your car's alternator under the hood will affect alternator repair labour costs. Mechanics usually need to disassemble some parts of your engine to be able to reach your alternator. Some alternators are easier to get to than others and generally cost you less on labour. 

☞ Related article: How much does it cost to replace a car alternator in the UK?

Part availability 

Sometimes, an alternator only requires minor repairs instead of a replacement. However, some parts are easier to source than others. Hard-to-find parts would need to be shipped, increasing the cost of fixing your alternator. For instance, alternator belt repair costs are quite low. But if parts are scarce, your mechanic will suggest replacing your alternator altogether.

Post a task for alternator repair

If you start noticing any of the signs of a faulty alternator, log on to Airtasker today to find an experienced mechanic and inquire about your area's average alternator repair cost. Thanks to Airtasker's straightforward and dependable rating system, you'll be able to find a professional car service nearby to help you with your car troubles.

All you need to do is post a task, wait for offers from Taskers, and accept the one that fits your schedule and budget. Be sure to indicate your car's make and model and the issues you'd like your Tasker to check. 

Once you've accepted an offer, conveniently wait for your Tasker to arrive and get the job done on your agreed-upon schedule. It's that easy!