Top Mechanics For Porsche Alternator Repair & Replacements
32 Reviews
Garage in Newcastle, 17 years of experience
I have worked as a mechanic for 17 years progressing through my career. Working as a roadside breakdown technician and work directly for vehicle manufacturers.
BRIAN • 4th October 2025
Porsche Boxster • Alternator replacement
95 Reviews
Garage in Stevenage, 20 years of experience
We are a professional automotive service company with over 20 years of experience in the industry. Our qualified mechanics are passionate about delivering high-quality car repairs and exceptional customer se...
MIKE • 25th October 2024
228 Reviews
Garage in Woking, 10 years of experience
Mobile mechanic service with 10 years workshop experience. Friendly, polite and knowledgeable in all work carried out. All aspects of work carried out from pre-MOT to clutch and cambelt replacement.
485 Reviews
Garage in Southampton, 20 years of experience
I began my career as a mechanic when I was 17 years old in Portugal. When I was 22 years old I set-up my own garage in for around 7 years before moving to the UK in 2007. I worked in various garages in order...
115 Reviews
Mobile mechanic in Skinningrove, 30 years of experience
.30 years experience in the industry carrying out repairs to most makes of vehicles to a high standard, using the experience gained & up-to-date equipment we now specialise in the diagnostics aspect of the c...
GEOFFREY • 23rd September 2016
Porsche Boxster • Alternator replacement
4 Reviews
Garage in Watford, 9 years of experience
Hi, we are a small Established garage in Watford. I have 8 years of experience and am able to offer all vehicle services such as oil service, exhaust repairs, clutch,brake discs, and pads and much more.
1759 Reviews
Garage in Darwen, 14 years of experience
I started my apprenticeship when I left school at the age of 15. I’ve been fully qualified for 11+ years with NVQ level 1, 2 and 3. I’ve been an MOT tester for 10 years. Here at Jamie’s mobile mechanic w...
MATTHEW • 23rd February 2026
Vauxhall Corsa • Car Won't Start Inspection
120 Reviews
Mobile mechanic in Newcastle Upon Tyne, 22 years of experience
Servicing and repairs to your home or work place, we do diagnostics , servicing, brakes, clutch, timing belts and wet belts, mot collection service and all other kinds of repairs
GLEN • 23rd February 2026
Volvo XC60 • Car Won't Start Inspection
4 Reviews
Mobile mechanic in London , 21 years of experience
I am a qualified mechanic with 21 years of experience in the motor trade. During this time, I have diagnosed and repaired a wide range of mechanical issues across various vehicle makes and models, many of wh...
SAMHITA • 23rd February 2026
Mercedes-Benz C-Class • Battery replacement (vehicles with stop/start system)
85 Reviews
Garage in Littleport, 12 years of experience
Tyres, Wheel balancing Mobile diagnostic Car wrap Timing belts Clutches Pre-Purchase inspection Brakes,suspensions,engines,Pre Mot checks,Valeting, paint polish,etc. Car body resprays and repairs as ...
283 Reviews
Garage in Thurrock, 6 years of experience
At my automotive service business, we specialize in providing top-notch solutions for your vehicle's maintenance needs. With a dedicated team of experts, we offer a wide range of services, including tire cha...
JAMES • 23rd February 2026
Vauxhall Insignia Sports Tourer • Brake discs and pads replacement - front (both)
227 Reviews
Garage in Bethersden , 20 years of experience
I have been in the motor trade 20 years. During this time I have worked for independent garages including BMW and Mercedes main-dealers. I have progressed through the ranks as a master tech and workshop co...
45 Reviews
Mobile mechanic in Bracknell, 15 years of experience
Though most of my focus has been on Diesel engines on mainly commercials. I’ve not limited my expertise and hence able to work on all types of vehicle makes and models carrying out services, brake issues, cl...
DEAN • 23rd February 2026
Ford Transit • Brake pads replacement - rear (all)
105 Reviews
Garage in Chertsey Surrey, 11 years of experience
Car and van servicing and repairs Auto electrician Fault finding Diagnostics AA approved contractor Recovery and roadside assistance Two vehicle repair workshops Located in north London and our...
11 Reviews
Garage in Sandy, 15 years of experience
I have worked in a variety of motor vehicle repairs Ranging from bespoke Landrover company called foley specialist vehicles to performance specialists like Highline autos with vast amounts of experience ra...
SIMON • 23rd February 2026
Dacia Duster • Additional work following previous booking
Frequently asked questions about Porsche alternator repair & replacements
Read our answers to questions about alternator repair costs, symptoms and more.
What does an alternator replacement on my Porsche involve?
- Mechanic will inspect the car's battery charging system.
- Mechanic will inspect the alternator's ancillaries (drive belt, cables etc.)
- Mechanic will test the voltage output of the alternator.
- If necessary, the mechanic will replace the alternator.
- Mechanic will advise if any other parts of the electric system need to be replaced.
- Mechanic will test the charging system and will test drive the car.
What are the symptoms of a bad Porsche alternator?
- When the battery warning light on the car's dashboard has lit up.
- When the battery is not being recharged
How long does it take a mechanic to replace an alternator on my Porsche?
On average, alternator replacement times can range from 1 hour to 2.5 hours with an average of just over 1 hour. The time that the job takes will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.
How often should I replace an alternator on my Porsche?
Generally alternators only need to be replaced if there is an issue with them. Should you experience any problems like those listed it is important to have the battery charging system inspected and, if necessary, have the alternator replaced.
As the demand for more and more electrical equipment and devices on modern vehicles increases, the demand on the alternator is increased. Therefore whilst the units themselves have improved dramatically in design and reliability, this is outweighed by the increased reliance on it. So, alternator replacement is a frequent repair on most vehicles at some point.
What are the signs of a bad Porsche alternator?
If the battery light remains on with the ignition (and does not go out once the charging is in operation), or comes on with the engine running then there is an issue with the alternator generating power and the battery will not be recharged. It is important to get a professional mechanic to check the issue as soon as possible.
How can I extend the lifetime of my Porsche alternator?
Because it is not possible to turn the alternator off and it will therefore always be turning when the engine is running, there is little you can do to prevent wear and tear. Obviously as an electrical device, they do not like water, so avoiding flooding is important!
Can a bad or faulty alternator affect a new battery on my Porsche?
A bad alternator can damage a new battery if the battery is not receiving the proper charging voltage. While it may not completely destroy it, a faulty alternator can cause a new battery to drain more quickly than it should.
Can an alternator on my Porsche fail suddenly?
Alternators can fail suddenly, but more often than not they will slowly lose their ability to charge the battery and eventually die. So even if it fails while driving, you may still be able to drive the car a few miles before the car comes to a complete stop.
How do I check if my Porsche alternator is working properly?
The easiest way to check if your alternator is working is to start the car and let it idle. Then, turn on all of the car's accessories one at a time. If the car's battery dies while the accessories are on, then the alternator is not working.
Additionally, the battery should be tested for voltage. If the battery is low, the alternator may not be charging the battery. Depending on the electrical system, a voltmeter reading in the 13.8 to 15.3 volt range with the engine running, lights and accessories off, generally indicates that the alternator is working as it should be.
Can I jumpstart my Porsche with a bad or faulty alternator?
If the battery is not dead, then yes, you can jumpstart a car with a bad alternator, but it will only run for a short period of time before the battery is drained again.
What happens when the car alternator fails while I am driving on my Porsche?
If your alternator dies while driving, your car will eventually lose power and come to a stop. You may notice the first signs of a dying alternator with dimmed interior lights and warning lights on the dashboard. The best thing to do in this case is find a safe place to stop and call for professional help.
How do I fix a bad Porsche alternator?
In most cases the alternator would be replaced if it bad or faulty. Alternators can be refurbished but often getting a new one fitted is more cost-effective. An alternator is an electrical component that is key to supplying power to your car so fixing it is a job best left to qualified technicians.
Can local garages offer home collection and delivery for Porsche alternator repair?
Yes, many local garages are able to offer collection and delivery for an alternator repair on your Porsche. With ClickMechanic collection & delivery is free if your vehicle is drivable. Once booked a mechanic will pick up the vehicle on the day and time of your choice, do the work, and return the vehicle at a time convenient to you. Simply enter your vehicle registration number and postcode to get an upfront price for a alternator repair on your Porsche.
Can mobile mechanics do Porsche alternator repair at my home or office?
Yes, mobile mechanics can do an alternator repair at your home or office on your Porsche, provided there is a safe and sufficient space to conduct the repair or replacement. With ClickMechanic, once booked for a date and time of your choice, your booking will be offered to vetted mobile mechanics in your area.
How much does a Porsche alternator repair cost?
The cost for a Porsche alternator repair depends on the model of your Porsche. See the averages for different models below. We use industry standard data & millions of data points so you know what you should be paying.
These estimates may include Alternator.
| Name | Average Cost | |
|---|---|---|
| Porsche 911 | £493 | Get exact price |
| Porsche Boxster | £492 | Get exact price |
| Porsche Cayenne | £819 | Get exact price |
| Porsche Cayman | £431 | Get exact price |
| Porsche Panamera | £423 | Get exact price |
Average costs for 2 models not shown due to insufficient data. Show ∨
- Porsche Macan
- Porsche 918 Spyder
Estimates on average repair costs, such as the above results for an alternator repair, are based on ClickMechanic's quote data which combines multiple third-party sources. Actual costs may vary. We provide estimates on average repair costs for information only and accept no liability for any inaccuracies or errors. If you think an estimate is incorrect, please contact us to let us know.
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Mechanics that work on Porsches
- DNA Mobile Mechanic Services Ltd, Sittingbourne
- Grumpy's Auto's, Leicester
- Kh Jk Services, Abergavenny
- Marks Motors, Northolt
- Newlyn Mobile Mechanical, Tamworth
- R G Car Services, Banham
- SJ Automotive Solutions, Rhyl
- Sw Vehicle Tech, Ellesmere Port
- The Mobile Mechanic Uk, Derby
- Vag Town, Worcester
- Wirral Car Repairs, Wirral