ONYX AUTOCENTRE
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★★★★★ 5-Star Google Rated · Since 2019

Car Servicing & Repairs inGerrards Cross.

We're just 15 minutes from Gerrards Cross via A40 to A412. Straight down through Iver into Slough. Same-day slots, honest prices, the same Onyx workshop Gerrards Cross drivers already trust. No nonsense. No hidden prices. Book in today.

⭐⭐⭐⭐⭐ 4.9 out of 5 from 500+ Google reviews. Trusted by drivers across Slough since 2019

  • ✓6 months interest-free, up to £3,000
  • ✓Same-day slots available in Slough
  • ✓15 minutes from Gerrards Cross

Get a quick quote

We'll WhatsApp you back. Usually within minutes.

How should we get back to you?How should we get back to you?

Why Gerrards Cross drivers choose Onyx over a main dealer

Discretion, OE parts and a proper paper trail. Exactly what a a fair amount car should get. Without the dealer markup.

  • Main-dealer diagnostics. Manufacturer-level diagnostic software in the bay for BMW, Audi, VW, Mercedes, Ford and Vauxhall. Ferrari and Aston Martin get the same attention as a Fiesta.
  • Payment Assist. First payment at booking, then 5 more monthly payments, 6 in total, interest-free. Up to £3,000, no setup fees.
  • Same-day slots most days. Ring before 11am and we'll usually fit you in.
  • WhatsApp before we touch anything extra. Photos of what we've found, the price, and you say yes or no.
  • Service book stamped. OE-spec parts, warranty kept, no main-dealer markup.

Getting to us from Gerrards Cross

We're at Deseronto Trading Estate, St Mary's Road, Slough, Berkshire, SL3 7EW. From Gerrards Cross it's A40 to A412. Straight down through Iver into Slough. Local landmarks on the way: Gerrards Cross station, the A40 / Oxford Road, Chalfont St Peter border.

What we do for Gerrards Cross drivers

Every core service, by trained techs, at our Slough workshop:

See all 41 services →

Get a quick quote

We'll WhatsApp you back. Usually within minutes.

How should we get back to you?How should we get back to you?

Car servicing & repairs for drivers across Slough and Berkshire

Our Slough workshop is the closest properly-equipped garage for car servicing & repairs to most of Gerrards Cross and the wider Berkshire area. We see Gerrards Cross cars in every week, alongside drivers from Maidenhead, Uxbridge and right across Slough. One workshop, one team, one standard. That's why Gerrards Cross customers stick with Onyx Autocentre in Slough for car servicing & repairs year after year.

All our services

Every service we offer at our Slough workshop. Tap a tile to find out more.

Customer Reviews

What Our Customers Say

Rated 5 Stars on Google by drivers across Slough and Berkshire

★★★★★
2 months ago

"Took my BMW here for an oil change and oil filter and the service was spot on. Really friendly team, got the car booked in quickly and the job was done properly with no hassle."

CS · Google Review
★★★★★
1 month ago

"Highly recommend this garage. After contacting a few other garages who didn't want to take my car in for diagnostics, these guys were happy to help. They diagnosed and fixed an engine fuel leak issue professionally and efficiently. Great service and very reliable. I'll definitely use them again."

Sandesh Jacob · Google Review
★★★★★
5 months ago

"Very nice experience at Onyx — they took me in immediately and completed the DRL module swap efficiently. I have no regrets and would highly recommend."

Rehan Kazi · Google Review
★★★★★
5 months ago

"I brought my car to Onyx after visiting many other mechanics who failed to sort out issues with my vehicle. The mechanics here clearly explained the issues with the vehicle and fixed them quickly. Amazing service and wonderful people, highly recommend."

Shearyaar Hussain · Google Review
★★★★★
3 months ago

"These guys are always polite and welcoming. I've taken multiple vehicles here and the service received has been excellent."

Kelly Tanner · Google Review
★★★★★
6 months ago

"Had the front pads done here over the weekend. Second time in with Onyx and service has been top notch both times. On time, no hassle and cost effective. Highly recommend."

Mark Crofton · Google Review
★★★★★
10 months ago

"Max and Ben are extremely professional and did an excellent repair on my wife's car at a great price. Max spotted the problem within 6 hours, which 2 other garages could not detect."

Ameer · Google Review
★★★★★
6 months ago

"I took my car to Onyx and met Ben who was friendly and I got the problem diagnosed by Ben which I had a faulty water pump. I was quoted a reasonable price and got it replaced. I was satisfied and would recommend Onyx."

Ali Asad · Google Review
★★★★★
2 months ago

"Great service, sorted out my alloy refurb at a good price and quick turnaround. Top service, highly recommend."

Raman · Google Review
★★★★★
1 year ago

"A great experience with Onyx who fitted a new clutch for my Fiat 500. Super quick, friendly and well priced. Would highly recommend."

Emma Hedley · Google Review
★★★★★
6 months ago

"Very friendly, no hassle effective service. Definitely recommend and will use when I need to get my alloy wheels refurbished."

Andrew Jackson · Google Review
★★★★★
9 months ago

"Brought my Audi S3 in for a coolant leak — the part was on back order but they managed to source one in a couple of days. Massive thanks to Ben."

Jays Dad · Google Review
★★★★★
1 year ago

"My vehicle went in for a brakes job and Ben and the team at Onyx Autocentre did an amazing job. Highly recommended."

Joanro Gomes · Google Review
Payment Assist

Spread the cost over 6 months, interest-free.

Big bill? Pay the first instalment when you book, then spread the rest across up to 5 more monthly instalments, interest-free. Available on jobs up to £3,000. No setup fees, no hidden interest. FCA-authorised through Payment Assist, soft credit check, decision in minutes.

Payment Assist - spread the cost of your repair over up to 6 months, interest-free.
  • ✓ Up to 6 months interest-free
  • ✓ Available on jobs up to £3,000
  • ✓ First payment at booking, rest split monthly
  • ✓ Soft credit check, decision in under 2 minutes
  • ✓ No setup fees, no hidden interest

Same-day slots are limited this week.

Call or WhatsApp now and get a slot from Gerrards Cross today. Slough, Langley, Colnbrook, Windsor, Maidenhead, Uxbridge and Gerrards Cross.

Serving: Slough · Langley · Colnbrook · Datchet · Horton · Wraysbury · Poyle · Windsor · Burnham · Taplow · Maidenhead · Gerrards Cross · Uxbridge · West Drayton · Hayes · Staines

Gerrards Cross. Frequently Asked Questions

Do you service Porsches and Range Rovers from Gerrards Cross?+
Yes. We're the specialist of choice for a lot of GX households. Full service history kept and stamped, OE parts, full paper trail for resale.
How long is the drive from Gerrards Cross?+
Fifteen minutes off-peak via the A40 and A412 through Iver. Most SL9 customers drop the car first thing and head back later in the day, or wait in the on-site lounge with WiFi and coffee.
Will using Onyx instead of a main dealer affect my warranty?+
No. Block Exemption regulations protect you. We use OE-quality parts and the correct procedure, so your manufacturer warranty stays intact.
Do you handle classic cars from the GX area?+
Yes. Air-cooled Porsches, classic Mercedes, restored British metal. Call us first, we love them.
Can I pay monthly with Payment Assist?+
Yes. First payment when you book, then 5 more monthly payments, 6 in total, interest-free. Up to £3,000, no setup fees. Soft credit check, decision in minutes.
Will servicing with you affect my manufacturer warranty?+
No. Block Exemption regulations protect you. We use OE-quality parts and the correct procedure so your service book stamp is valid.
Are same-day appointments available?+
Yes. We keep slots free every day. Call before 11am for the best chance of a same-day fit.
Do you work on electric and hybrid cars?+
Yes. High-voltage qualified technicians for Tesla, BMW i, Polestar, Audi e-tron and every major hybrid.
What if you find more work needed?+
We stop, photograph it, send it on WhatsApp and quote. Nothing goes ahead without your say-so.
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