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Car Mechanic in Slough

Car Mechanic in Slough – Expert Car Repairs & Servicing

Car Mechanic in Slough

Are you searching for a trusted car mechanic in Slough? At Onyx Performance, we specialise in car repairs, servicing, diagnostics, and performance upgrades for all makes and models. Our experienced team provides affordable, high-quality vehicle repairs to keep your car running smoothly and efficiently.

We serve customers in Slough, Windsor, Maidenhead, and surrounding areas, offering professional car servicing, brake repairs, suspension work, tyres, wheel refurbishment, number plates, and more. Whether you need a full service, new brakes, or an engine diagnostic check, our expert mechanics in Slough are here to help.

Car Servicing in Slough – Full, Interim & Engine Maintenance

Regular car servicing is essential to keep your vehicle running at its best. At Onyx Performance, we provide interim, full, and major servicing to ensure your car is safe, reliable, and performing efficiently.

Our car servicing in Slough includes:

– Oil & Filter Changes – Essential for engine longevity and performance.
– Brake Fluid Replacement – Ensures responsive braking and safety.
– Air & Cabin Filter Replacement – Improves air quality and engine efficiency.
– Spark Plug & Fuel System Checks – Ensures smooth engine operation.
– Coolant System Flush & Top-Up – Prevents overheating and engine damage.
– Timing Belt & Chain Inspection – Crucial for preventing major engine failure.

Whether you drive a petrol, diesel, hybrid, or performance vehicle, our qualified car mechanics in Slough have the knowledge and expertise to keep your car in top condition.

Car Repairs in Slough – Affordable & Reliable Service

If your car is making unusual noises, displaying warning lights, or not running as it should, our expert car repair services in Slough can quickly identify and fix the issue. Our car repair services include:

Brake Repairs & Replacement

We fit high-quality brake pads and discs.

Suspension Repairs & Upgrades

Shock absorbers, coil springs, and bushings.

Clutch & Gearbox Repairs

Manual and automatic gearbox servicing.

Cooling System Repairs

Radiator, thermostat, and water pump maintenance.

Exhaust Repairs & Upgrades

Exhaust system fixes and performance upgrades.

Battery & Electrical Diagnostics

Battery replacement, alternators, and wiring faults.

Wheel Refurbishment, Number Plates & Tyres in Slough

Alongside mechanical repairs and servicing, we also offer:

– Wheel Refurbishment – Alloy wheel repairs for curb damage, scratches, and corrosion.
– Number Plates – Custom or replacement plates available in legal formats.
– Premium & Budget Tyres – Supply and fitting of high-performance or affordable tyres.
– Wheel Balancing & Alignment – Improves tyre longevity and driving stability.

We stock leading tyre brands for all vehicle types and budgets. If you need new tyres in Slough, our team can supply and fit them quickly and professionally.

Customer Reviews

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Anil Soni profile picture
Anil Soni
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Thank you guys for your professional, dedicated and honest opinion. You made my day by fixing my son's car so he could use it for DoE at very short notice. Max and Kay were brilliant and I would definitely recommend this garage as a organised and trustworthy business. Keep up the good work.
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subin pradhan profile picture
subin pradhan
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Took my BMW 440i to install downpipe and mid pipe. Top guys with good service and reasonable price. Will be going back for more work done.
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J JareCki profile picture
J JareCki
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I just done Stage1 in my audi s3, car drive superb, excelent service, thanks Ben,Sam and Onyx team! Brilliant work
Posted on Google Google
Dan May profile picture
Dan May
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Honest and knowledgable! Rare these days - saves me hundreds by checking my Golf R properly. Will only use these guys from now on
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Darren Dawes profile picture
Darren Dawes
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I took my jaguar xfr to these guys for a re map . Excellent service. They could not have been more helpful. Very knowledgeable they definitely know what they are doing. If your looking for a re map I would highly recommend you speak to them.
Posted on Google Google
Hana profile picture
Hana
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I was recommended Onyx to get my diamond-cut alloys refurbished. I am located an hour away but the recommendation was important so decided to leave my car with these guys. First impressions, the team were very polite, friendly (Essan, Ben and the guys that actually did the refurb in the intense heat) The prices were competitive. And the quality of work was super. There was slight miscommunication post the sale (which happens) but I was pleased they resolved this to my satisfaction. One idea I would suggest is advising the customer 'before' the work starts that the TPF valves may need replacing so we have the option to decide whether to do it whilst the wheels are off anyway rather than post refurb to avoid scratching the newly done alloys. Otherwise happy with my overall experience.
Posted on Google Google
Mark profile picture
Mark
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Amazing service
Posted on Google Google
pavan khangura profile picture
pavan khangura
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
The best experience ever well organised clean friendly team and the experience was amazing A big up to the whole staff.

The Leading Car Mechanic in Slough

For expert car repairs, servicing, and maintenance in Slough, contact Onyx Performance today. Our highly skilled mechanics are here to help keep your car performing at its best. Book your appointment today with Onyx Performance – the number one car mechanic in Slough!

5-Star Google Reviews
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Why Choose us as Your Car Mechanic in Slough?

Whether your car needs a full service, brake replacement, or engine diagnostic, we are your go-to car mechanic in Slough for reliable, professional service.

Experienced & Skilled Mechanics

Over a decade of experience working on all makes and models.

High-Quality Parts & Materials

We use only the best components for reliability and safety.

State-of-the-Art Equipment

Advanced diagnostics and repair technology.

Competitive Pricing

Affordable car repairs with no hidden costs.

Local & Trusted Service

Serving Slough, Windsor, Maidenhead, and surrounding areas.

Fast Turnaround

Most repairs and servicing are completed the same day.

Frequently Asked Questions

Where in Slough are you based?
Our workshop is conveniently located in Slough, with easy access from Langley, Cippenham, Colnbrook, and Windsor. We’re just a short drive from the A4 Bath Road and M4.
Do you provide both car servicing and repairs?
Yes – we cover everything from interim and full servicing to MOT preparation, diagnostics, and mechanical repairs. Our Slough garage is set up for all makes and models.
Can you work on performance and modified cars?
Absolutely. Onyx Performance is known for working on high-performance, tuned, and modified vehicles as well as standard cars.
Do you offer same-day repairs in Slough?
Yes, where possible. If we have the necessary parts in stock, we can often complete same-day repairs. For larger jobs, we’ll give you a clear timescale from the start.
Can you diagnose dashboard warning lights?
Yes – our Slough mechanics use advanced diagnostic tools to quickly find and fix the issue behind any warning lights.

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