Bentley Engine Specialist · Dubai
We diagnose before we replace, so you pay only for the fault your engine actually has.
A team of 30 craftspeople spent 6.5 hours hand-building every Bentley W12 in Crewe. Repairing one deserves the same care.
Bentley has used five very different engines over the last 25 years. Each one fails in its own way, so we start every job by identifying exactly what’s under your bonnet.
| Engine | Years | Found In | Output | What We Watch For |
|---|---|---|---|---|
| 6.0-litre twin-turbo W12 | 2003 to 2024 | Continental GT, Flying Spur, Bentayga | 560 to 750 PS | Coil packs, oil leaks, timing chains, cooling |
| 4.0-litre twin-turbo V8 | 2012 to present | Continental GT, Flying Spur, Bentayga | 550 PS, 770 Nm | Turbo heat, oil leaks, misfires |
| V6 Hybrid | 2019 to present | Bentayga Hybrid, Flying Spur Hybrid | Varies by model | Engine and hybrid system faults |
| V8 Ultra Performance Hybrid | 2024 to present | Continental GT Speed, Flying Spur Speed | 782 PS, 1,000 Nm | High-voltage safety, cooling, software |
| 6.75-litre L-Series V8 | 1959 to 2020 | Arnage, Brooklands, Azure, Mulsanne | Up to 530 hp, 1,100 Nm | Age-related seals, turbos, cooling |
The W12 ended production in 2024 after more than 100,000 were built. The L-Series V8 ran for 61 years, making it the longest-serving V8 in history. With both out of production, specialist repair is now the main way to keep these engines on the road.
Most engine repairs go wrong because the fault was guessed, not found. These three services make sure the right problem gets fixed first.
We check the engine for leaks, worn hoses, belt condition and unusual noises at idle and under load. We also read oil and coolant condition for early signs of internal wear. It’s the ideal first step before a long road trip, after buying a used Bentley or when something feels “off”.
Bentley is part of the Volkswagen Group, so we use group-level diagnostic software to read every engine control module. We review live data, misfire counters and fault history together. Linked faults are traced back to one root cause before we suggest any part.
A tune-up restores lost smoothness and response. It includes spark plugs, filters, throttle body cleaning and adaptation resets. We also make sure your engine runs on the correct oil grade. According to the US Department of Energy, using the recommended oil grade alone can improve mileage by 1% to 2%.
These are the faults we see most on Bentley engines in Dubai’s heat and stop-go traffic.
Heat hardens rubber seals and gaskets over time. Common leak points are valve cover gaskets, oil cooler lines, turbo oil feeds and the rear main seal. We trace the leak to its source with UV dye before replacing anything. That way you’re never charged for seals that were still sealing.
A W12 has 12 ignition coils and 12 spark plugs, so one weak part can cause a rough idle or loss of power. Unburnt fuel from a misfire can also overheat and damage the catalytic converters. We pinpoint the cylinder, test the coil, plug and injector, and fix the actual cause.
Modern Bentley W12 and V8 engines use timing chains, not belts, so there’s no fixed replacement interval. A stretched chain shows up as a rattle on cold start or a camshaft timing fault code. On the W12, the chains sit at the gearbox end of the engine, so chain work usually means removing the engine.
Bentley’s 4.0-litre V8 places both turbochargers inside the V of the engine, a “hot-V” layout. Each turbo can spin at up to 176,000 rpm in the hottest part of the engine bay. We repair boost leaks, worn bearings, wastegate faults and oil-starved turbos, and we check the cause so a new turbo doesn’t fail the same way.
When internal damage is confirmed, you have three routes. We test the engine thoroughly first, then explain each option and its cost in writing.
A rebuild strips the engine and replaces every worn internal part, such as bearings, piston rings, seals, gaskets and timing components. It keeps your car’s original engine, which matters for value on a W12 or L-Series car. It’s often the best choice when the block and heads are still sound.
An overhaul targets one area of the engine rather than a full strip-down. Common examples are a cylinder head overhaul or replacing the timing set and seals. It costs less than a rebuild and suits engines with a single, contained fault.
Replacement makes sense when the block is cracked or the damage is too widespread to repair. Dubai’s RTA does not issue permits for major engine changes that alter a car’s original factory specifications. That’s why we only fit a matching, same-specification engine, so your car stays road-legal.
| Option | What It Involves | Best For |
|---|---|---|
| Overhaul | Repairs one area, such as the head or timing set | A single, contained fault |
| Rebuild | Full strip-down, all worn internal parts replaced | Sound block with general internal wear |
| Replacement | A matching same-spec engine fitted | Cracked block or severe internal damage |
Most engine failures start small. This table shows what each warning sign usually points to.
| Warning Sign | Likely Cause | What We Do |
|---|---|---|
| Rough idle or shaking | Misfire from a coil, plug or injector | Cylinder test and targeted repair |
| Rattle on cold start | Stretched timing chain or worn tensioner | Timing check and chain repair |
| Burning oil smell | Oil leaking onto hot exhaust parts | UV leak trace and seal repair |
| Loss of power or limp mode | Boost leak or turbo fault | Boost test and turbo repair |
| Blue or white smoke | Worn turbo seals or internal engine wear | Compression and leak-down tests |
| Rising temperature gauge | Cooling fault or coolant leak | Pressure test and radiator repair |
| Flashing check engine light | Severe misfire | Stop driving and book a diagnosis |
We check the engine for leaks, noises and warning lights, and take note of anything you’ve noticed. A short test drive helps us feel the fault the way you do.
We read every engine module, plus live data and misfire history. Compression and leak-down tests confirm the engine’s internal condition.
You get the confirmed fault, parts, price and timeline before any work starts. Photos and test results are included, so you see what we found.
Our technicians carry out the approved work using genuine or OEM parts. If we find anything new along the way, we ask before going further.
We road test the car, clear the fault codes and walk you through the work. Your old parts are kept for you to see, with full service notes.
From the 6.75-litre L-Series to the 782 PS hybrid, we know each engine’s weak points.
We test and confirm every fault first, so you don’t pay for parts your engine doesn’t need.
Engine faults often link to other systems. We also handle fuel pump replacement, exhaust repair and oil changes in the same workshop.
You approve every step in writing, with photos of the fault before work begins.
Can’t find your answer? Talk to a technician directly.
+971 50 000 0000No. Modern Bentley W12 and V8 engines use timing chains, which are designed to last much longer than belts. Chains can still stretch over time, especially with irregular oil changes. A rattle on cold start or a timing fault code is the usual first sign.
In most cases, yes. The W12 is no longer in production, so keeping the original engine protects your car’s value and authenticity. If the block and heads are sound, a rebuild is usually the most cost-effective long-term fix.
Smaller repairs such as a misfire or oil leak are often done within a day or two. A full rebuild takes much longer because the engine has to be removed, stripped and measured. We give you a clear timeline with your quote once parts are confirmed.
It’s best not to. A flashing check engine light means a severe misfire, and unburnt fuel can overheat and damage the catalytic converters. Book a diagnosis as soon as you notice rough running or a loss of power.
Usually, yes, if the block and cylinder heads are undamaged. A replacement only makes sense when the damage is too widespread to repair. We inspect the engine first and show you both prices in writing.
Yes. We work on the V6 Hybrid and the V8 Ultra Performance Hybrid. Our checks cover the petrol engine, the high-voltage system and cooling, with full safety procedures before any work begins.
We rebuild engines to Bentley’s original specification. Dubai’s RTA does not issue permits for major engine changes that alter factory specs, so upgrades like a bigger engine can leave your car unregistrable.
We recommend checking plugs, filters and engine condition at each annual service, which Bentley sets at 12 months or 10,000 miles (about 16,000 km). Dubai’s heat and stop-go traffic count as severe use, so many cars benefit from an earlier check.
Don’t wait for a small engine fault to become a rebuild. Book a full engine diagnosis with our Bentley specialists and get a written quote before any work begins.
