Top Mechanics For Porsche Alternator Repair & Replacements
28 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
92 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
210 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
28 Reviews
Mobile mechanic in St Helens, 15 years of experience
I have worked with numerous companies such as kwik fit national tyres and more local garages
148 Reviews
Mobile mechanic in Basingstoke , 14 years of experience
Throughout my career, I've consistently valued honesty and transparency, catering to customers with varying levels of mechanical knowledge. My commitment is to ensure clients comprehend necessary work and fe...
LAWRENCE • 16th December 2025
Land Rover Discovery Sport • Interim Service
423 Reviews
Garage in Gloucester , 13 years of experience
Bishop autos a local mobile mechanic business set up in 2012 we are a company specialising in the mobile repair, air con and computer diagnostics of today’s vehicles ❄️🥶 we do air con regas services on ...
135 Reviews
Mobile mechanic in Shoreham-by-sea, 9 years of experience
Our experienced mechanics have worked at main dealers and independent garages for over a period of 15 years. All our mechanics are qualified to a minimum of Level 3. We always work with our customers...
JOANNE • 16th December 2025
Ford B-Max • Engine oil & filter replacement
222 Reviews
Garage in Lancaster, 16 years of experience
JM Motor Services Ltd was formed in July 2016. The business operates as a mobile mechanic business serving Lancaster and a 50 -mile radius working with all makes/models and repairs. You can trust in us to g...
SIMON • 16th December 2025
26 Reviews
Garage in Swansea, 22 years of experience
22 long and hard years of experience, St James Automotive & Marine - the best there is. We Cover all of the South West and South of UK.
JANINE • 16th December 2025
Ford Kuga • Battery replacement (vehicles with stop/start system)
157 Reviews
Garage in Birmingham , 20 years of experience
Hi, my name is marcus. I am a highly qualified mechanic with over 20years experience. I am friendly, polite, reliable and efficient. Your safety is of the utmost importance . I take pride in my work and w...
12 Reviews
Garage in Barnet, 6 years of experience
Over 6 years experience in mobile mechanics. Attending to various models of vehicles. Good work rate and efficient.
381 Reviews
Mobile mechanic in Romsey, 12 years of experience
I started my career in HM Armed forces joining the REME, where I served for 7 years. From there I worked for Mercedes-Benz for 4 years. And now I do all sorts, if it’s got wheels, I can fix it!
TOM • 16th December 2025
Mercedes-Benz GLC-Class • Brake pads replacement - front (all)
59 Reviews
Garage in Lutterworth, 15 years of experience
Hello there! My name is Nathan. I have worked in HGV breakdown / recovery and been a mechanic for many years, offering over 15 years experience. I am happy to assist wherever possible with any car,...
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.
Book a trusted mechanic today
Get an instant quote, then book a vetted mechanic to fix your car at your home or office.
- Vetted mechanics
- Save up to 50%
- Fast online booking
Mechanics that work on Porsches
- ANR TYRES LTD, Rainham
- Alin Mechanical Repair, Aylesbury
- Amey's Automotive, Wareham
- JJ Auto Repairs, Corwen
- JM Autotronics, Minley
- LC Autotech, Motherwell
- Lavish Car Care, Edinburgh
- Luke Wilberforce Mobile Mechanic, Doncaster
- M.B.Auto, Aylesford
- MECH AUTO TECH, Leeds
- Prorace Resto, Maddiston, Falkirk
- Redline Tyres LTD, Cheddar