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

Every garage service.One Slough workshop.

From routine oil changes to engine rebuilds and Stage 3 maps. 45 services, one team, one workshop. 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
  • Same trusted team. Every visit

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Air Bag Repairs

Air-bag warning fixes, crash data resets and module repair.

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Alloy Wheel Crack Welding

TIG-welded cracked alloy repair in Slough. Pothole and impact damage put right by certified welders.

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Alloy Wheel Refurbishment

Diamond cut, full colour change and kerb-damage refurbs.

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Alloy Wheel Welding

Cracked alloy welding, straightening and TIG repair.

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Auto Electrics

From dead batteries to CAN-bus faults. We trace it, we fix it.

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Boost Leak & Smoke Test

Boost leak and EVAP smoke testing in Slough. We find the split hose, cracked charge pipe or dodgy valve in minutes.

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Cambelts

Manufacturer cambelt kits fitted by trained techs. Same-day turnaround in Slough.

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Car Air Conditioning

Re-gas, leak detection and A/C compressor replacement.

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Car Batteries

All sizes in stock. Fitted free with battery purchase.

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Car Brakes

Pads, discs, calipers and ABS faults. Same-day brake repairs across Slough.

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Car Exhausts

Back boxes, mid sections, decats and full custom stainless systems.

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Car Modifications

Coil-overs, big brake kits, exhausts, intakes and lighting upgrades.

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Car Repairs

Mechanical and electrical repairs for every make and model.

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Car Safety Checks

Free pre-MOT safety check before your test.

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Car Servicing

Full, interim and oil services to manufacturer schedule. Book online or call.

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Car Tyres

Premium and budget tyres fitted, balanced and tracked while you wait.

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Carbon Cleaning

Walnut blasting and intake decoke for direct-injection engines.

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Cheap Car Tyres

Budget tyres fitted with the same care as premium brands.

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Clutch Replacement

Clutch packs, dual-mass flywheels, slave cylinders. Fitted and road-tested.

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Diesel Performance ECU Tuning

Diesel ECU tuning for more torque, better MPG and DPF/EGR solutions.

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Diesel Tuning

Diesel-specific maps tested on our 4WD dyno.

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Dyno Testing

4WD rolling road for power runs, before/after maps and fault hunting.

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ECU Remapping

In-house dyno tuning. More power, better MPG, full custom maps.

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Engine Diagnostics

Main dealer diagnostics for every make. Real fault codes, real answers.

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Engine Management

Engine management warning light? Booked in same day.

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Engine Rebuilds

Full or partial engine rebuilds for performance and daily cars.

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Engine Tuning

Stage 1 to Stage 3 tuning with dyno-proven results.

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Fleet Maintenance

Fleet servicing contracts with priority booking and invoicing.

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Gearbox Servicing

Automatic, DSG and manual gearbox oil services.

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Head Gasket Repairs

Head gasket replacement, skim, pressure test, full re-build.

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In-Car Entertainment

Apple CarPlay, Android Auto, head units and amplifiers.

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Mechanical Repairs

From timing belts to gearboxes. Full mechanical workshop.

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MOT Failure Repair

MOT failure repair in Slough. Emissions, brakes, suspension, headlights and bulbs fixed the same day so you pass the retest.

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Nitrogen Oxide (NOx) Sensor Repairs

NOx sensor repair, replacement and adblue fixes.

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Number Plates

DVLA-registered show and standard number plates made on site.

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Parking Sensors

Front, rear and 360° parking sensor retrofits.

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Steering

Power steering racks, pumps, fluid and steering geometry.

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Suspension

Coilovers, shocks, springs and bushes. Alignment after every job.

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Timing Belt Replacement

Timing belt and water pump replacement using OE-quality kits.

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Turbo Intake Cleaning

Intake, EGR and turbo cleaned in-situ. Brings back lost performance.

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Van Repairs & Servicing

Light commercial servicing and repairs. Transit, Vivaro, Sprinter and more.

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Vehicle Security

Ghost immobilisers, Metatrak & Scorpion trackers. Fitted in Slough.

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Wet Belt Replacement

Genuine like-for-like wet belt replacement for Ford EcoBoost and PSA PureTech engines. Done before it shreds your oil pump.

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Wheel Balancing

Road Force balancing for vibration-free driving.

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Window Tinting

Legal-limit and rear privacy tints. UV protected film.

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Same-day slots are limited this week.

Call or WhatsApp now and get your car booked in 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

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?

Frequently Asked Questions

What services do you offer?+
Everything from oil changes, tyres and brakes to engine rebuilds, ECU remaps and wet belt replacements. 45 services in one workshop.
Do I need to know what's wrong with my car?+
No. Tell us what you've noticed. Noise, light, smell. And we'll diagnose it. Most diagnoses are done same day.
Can you service my car under warranty?+
Yes. Block Exemption rules let any independent garage stamp your service book without affecting your manufacturer warranty.
Do you fit customer parts?+
Sometimes. For performance and modification work. For safety-critical jobs we use OE-quality parts we've sourced ourselves so the warranty stands.
How quickly can I get booked in?+
Same-day slots are usually available. Call or WhatsApp before 11am for a best-chance same-day fit.
Do you do MOTs?+
We prep your car and book the test at a trusted local MOT centre on your behalf. Fixes done in-house, no second trip needed.
What's the difference between an interim and full service?+
Interim covers safety checks plus oil and filter. Full adds air, fuel and cabin filters, spark plugs (petrol), brake fluid check and more. Major services cover everything plus cambelt where due.
Are you a specialist or general garage?+
Both. Specialists in VAG, BMW and performance work. General workshop for everything else.
Do you fix electric and hybrid cars?+
Yes. Full EV and hybrid servicing including high-voltage qualified work on Tesla, BMW i, Polestar, Audi e-tron, hybrids and more.
How much will it cost?+
Prices vary by car and job. WhatsApp your reg and a description and we'll quote within the hour during workshop hours.
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