Replace your BMW alternator

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The car’s alternator plays a crucial role in keeping the battery charged.

You may be able to spot that it isn’t working properly if your headlights are dimmer, you can small burning rubber or a growling/whining noise.

Your car battery acting up may also be the result of starter motor failure.

Top garages for BMW Alternator Repair (11,437 found)
Wilco Motosave - Allerton Road
99 Jobs Completed
Bradford
4.5 / 5

Wilco Motosave is one of the North's leading independent family owned motorists' stores and fitting centres. With 26 branches located throughout Yorkshire, Lincolnshi

Wells Tyre Services - Team Protyre
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Wells
4.8 / 5

Located in Webbs close opposite the cadet centre Wells Tyres opened in 1971 and joined the Protyre network n 2007.  Wells Tyre Centre cater for car, vans, 4x4 as well as

Hertfordshire Vehicle Services
153 Jobs Completed
Hatfield
4.9 / 5

Fast, professional and reliable service for the motorists of Hatfield, Welwyn Garden City, St Albans and surrounding areas. Mechanical repairs and servicing undertaken on

RAC Mobile Mechanic - We Come to You. Servicing on your drive or at work - Tamworth
31 Jobs Completed
Clifton Campville
5.0 / 5

The RAC offers complete peace of mind for 12 million drivers. We’re best known for our breakdown service. And now, our new RAC Mobile Mechanics are here to make everyday

Bush Tyres - Norwich
206 Jobs Completed
Norwich
4.8 / 5

Bush Tyres have rightfully earned their reputation as a leading independent tyre specialist and are currently setting standards that admiring competitors throughout the c

Harris and box vehicle solutions ltd
28 Jobs Completed
Witham
4.1 / 5

Phoenix Motors
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4.8 / 5

We are a newly established business based in Kilnhurst/Swinton Rotherham, South Yorkshire, Proud to be in the motor trade going strength to strength. We offer a no-hassl

DG Motors LTD
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newport
4.8 / 5

DGMotors LTD is a mobile mechanic service. Specialising in all range of Makes and Models. 16 plus years experience in the motor trade and also.. Over 7 years exp

Supreme Auto Performance
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At SupremeAutoPerformance we specialise in the repair, service, maintenance of all Audi, VW and Seat. Our VAG trained technicians use specialist diagnostic equipment to d

Tamil Motors LTD
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Liverpool
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First Stop Pilgrim Tyres
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4.0 / 5

Make us your First Stop for tyres, MOT & car services in the Plymouth area. Pilgrim Tyres has been serving the people of Plymouth for over 40 years, now under new

ARMZ MOTORS MOBILE CAR MECHANIC
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ARMZ Mobile Motors covers all makes and models but prides themselves as a BMW specialist, their head mechanic worked in a garage as a BMW specialist for over 12 years, or

Crampmoor Garage Ltd
8 Jobs Completed
Romsey
5.0 / 5

You can trust Crampmoor gargae to do the job right. With over four decades of experience under our belt, we know all there is to know about providing quality car care. Si

Dorset (Hampshire) Response (Mobile Repairs)
1215 Jobs Completed
Poole
4.8 / 5

Dorset/Hampshire Response is a mobile service covering the whole of Dorset parts of Hampshire and Wiltshire. For many years we have provided a professional and reliabl

Hanley Motor Company
365 Jobs Completed
Stoke-on-Trent
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Hanley Motor Company is a leading used car dealer based in Stoke on Trent, Staffordshire. If you are looking for a quality used car for sale then look no further than Han

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Replace your BMW alternator
Frequently asked questions
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What is a car alternator?

The car's alternator performs a simple but vital job: to keep your car's battery charged. The battery is responsible for starting the car, spark plugs, lights, electrics, and sometimes power steering - quite a job - so it's essential that it's topped up - and that's what the alternator does.

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What are common problems with an alternator?

The alternator acts like a small generator: the engine spins, and the alternator turns that spinning motion into electricity. The most common problems are worn brushes (the component that maintains constant electrical contact with the spinning alternator) and a failing voltage regulator (which ensures that the charge is sent to the battery at the correct voltage.)

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What are the common symptoms of alternator problems?

Common signs of car alternator problems include the 'charge' or battery lights flashing on the dashboard, flickering or dimming headlights and interior lights and a growling or whining noise under the bonnet.

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What is the average alternator repair cost?

An alternator can be rebuilt as opposed to replaced, however in truth the difference in cost is often quite small. Either way the most common repair cost is around £150-200.

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How to test an alternator for problems

A simple way to test an alternator for problems is to do what's known as the headlight test. Park your car with the headlights on or run it in neutral, then rev the engine. If the headlights dim you could well have an alternator problem. A better test is to take your car to a garage, where a car alternator can be tested using a multimeter tool.

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What happens if my alternator breaks?

If your alternator fails, your car battery won't charge and, very soon, will have insufficient charge to start the car.

Average rating for  BMW Alternator Repair  bookings

4.59

37 reviews

BMW Alternator Prices

Alternator repair prices can vary depending on your BMW model due to differences in labour time and parts needed but you can expect to pay between £250-£300. Take a look below at the average quote on WhoCanFixMyCar.com for some of the top car makes.


Alternator Repair Cost by BMW Model
BMW ModelAverage PriceGet Quotes
BMW 3 Series£343.40
BMW 1 Series£427.43
BMW 5 Series£493.21
BMW X5£407.38
BMW 6 Series£538.67
BMW 7 Series£451.60

This table uses data from quotes provided on WhoCanFixMyCar.com between 08/07/2022 and 06/10/2022.

Although the alternator is a relatively simple BMW part, it plays a critical role in your vehicle’s operation, so it’s essential any alternator problems are diagnosed correctly and fixed.

Here are some of the most common signs that your BMW alternator is on the blink:

  • The alternator warning light will be on – in most cases this is shaped like a battery but some cars will show ‘ALT’ or ‘GEN’
  • You may experience extremely bright or dimming headlights, or a speedometer that stops working
  • Drivers sometimes complain of a growling or whining noise before the alternator gives out
  • You may experience a smell of hot wires or burning rubber

The average BMW alternator repair cost is between £200 and £300, depending on the model of your BMW, so it’s important you make sure you find the best deal. And that’s where we can help.

Here’s how it works:

  • Simply enter your car registration number
  • Give us some details about your vehicle and the kind of repair work you require
  • We’ll send you a great selection of quotes from mechanics in your area
  • We use our network of 7,000 mechanics and garages across the UK to find you the best deal. You can then compare the quotes, read reviews from previous customers and book your alternator repair online.
  • Enter your registration to compare alternator repair prices, read reviews and book your car in online.
Gary from Complete Mechanics explains the workings of the alternator