BMW Turbo & Ancillary Repair

Turbocharger failure or degraded performance affects boost, fuel economy, and engine response. Our repair process covers the complete turbo system — we don't just swap the core, we inspect, test, and replace every ancillary component that could cause repeat failure.

• Turbo access and removal — on BMW's N63/S63 hot-vee engines, turbos sit between cylinder banks, requiring 12–16 hours of skilled labour; other BMW engines place turbos at the side or front, which is significantly faster to access.
• Full turbo inspection — shaft play, blade damage, oil-seal condition, and wastegate actuator function.
• Turbo rebuild or replacement — new bearings, seals, and balancing (or a factory-spec replacement unit if the core is beyond repair).
• Ancillary component replacement — wastegate actuators, oil feed lines, coolant lines, gaskets, and sealing rings — these are replaced as a set to prevent future oil leaks or boost-control issues.
• Reinstallation, bleeding, and testing — the system is refitted, cooling circuits are bled, and we test for boost leaks, correct wastegate operation, and overall performance on the road.

Read more about our full engine inspection process →

Turbocharger and ancillary repair covers the majority of modern BMW engines — diesel and petrol, 4-cylinder through to V8 and M-performance variants.

4-Cylinder turbo engines

• 1 Series — 116d, 118d, 120d, 118i, 120i
• 2 Series — 218d, 220d, 220i, 230i
• 3 Series — 316d, 318d, 320d, 320i, 330i
• 4 Series — 420d, 420i, 430i
• 5 Series — 520d, 520i, 530i
• X1 — sDrive18d / xDrive20d, sDrive18i / xDrive20i
• X2 — sDrive18d / xDrive20d, sDrive18i / xDrive20i
• X3 — xDrive20d, xDrive20i
• X4 — xDrive20d, xDrive20i

6-Cylinder turbo engines

• 1 Series — M135i, M140i
• 2 Series — M235i, M240i
• 3 Series — 330d, 335d, 340i, M340i xDrive
• 4 Series — 435d, 440i, M440i xDrive
• 5 Series — 530d, 535d, 540i
• 6 Series — 630d, 640d, 640i
• 7 Series — 730d / 740d, 730i / 740i
• 8 Series — 840d xDrive, 840i
• X3 — M40i, xDrive30d
• X4 — M40i, xDrive30d
• X5 — xDrive30d, xDrive40i
• X6 — xDrive30d, xDrive40i
• X7 — xDrive40d, xDrive40i
• Z4 — sDrive30i, M40i

V8 turbo engines (N63 / S63)

• 5 Series — 550e xDrive (V8), M5
• 6 Series — 650i, M6
• 7 Series — 750i, M760i
• 8 Series — M850i xDrive, M8
• X5 — xDrive50i, X5 M
• X6 — xDrive50i, X6 M
• X7 — xDrive40i (V8 versions), M60i

Performance M turbo engines (S55 / S58 / S63)

• M2 — M2 Competition, M2 (G87)
• M3 — M3 Competition (F80), M3 (G80)
• M4 — M4 Competition (F82), M4 (G82)
• M5 — M5 Competition (F90)
• M8 — M8 Competition
• X3 M — X3 M Competition
• X4 M — X4 M Competition
• X5 M — X5 M Competition
• X6 M — X6 M Competition

Not sure which engine your BMW has? Use our compatibility matching tool →

• Specialist BMW workshop — we work on BMWs every day, from 1 Series to M8, diesel to V8.
• Hot-vee V8 experience — N63/S63 turbos are notoriously difficult to access; we have the tools, training, and space to do it properly.
• Complete ancillary replacement — we replace oil lines, coolant lines, and actuators as a set, so you don't get a repeat failure.
• 12-month unlimited-mileage warranty — every turbo repair we carry is covered.
• Nationwide recovery — if your BMW won't make it to us, we can recover it from £70.
• 3–5 day rebuild turnaround — for most engines, we complete the work quickly without compromising quality.

Meet our workshop team →

• BMW Engine Rebuild — full engine strip and rebuild
• BMW V8 Hot-Vee Engine Repair (N63/S63) — comprehensive hot-vee V8 servicing
• BMW Diesel Timing Chain Repair (N47/B47) — timing chain replacement for diesel models
• BMW Petrol Timing Chain Repair (N20) — timing chain for petrol 4-cylinder models
• BMW Engine Failure Repair — full failure diagnosis and remediation
• BMW Engine Inspection & Assessment — pre-purchase and fault diagnosis