Change Car Turbo BMW 3-Series

Change Car Turbo

Very technical 2h30–31h00 ~250–3100£
Estimated time 2h30–31h00
Estimated labour cost ~250–3100£
Difficulty Very technical
Vehicles
3-Series 1998-2007 7
  • 318d Diesel (M47D20)
  • 318d, -td Diesel (M47D20TU)
  • 320d Diesel (M47D20)
  • 320d, -Cd Diesel (M47D20TU)
  • 320d, -td, -Cd Diesel (M47D20TU)
  • 330d, -xd Diesel (M57D30)
  • 330d, -xd, -Cd Diesel (M57D30TU)
3-Series 2005-2013 20
  • 316d Diesel (N47D20C)
  • 318d Diesel (M47D20TU2uL)
  • 318d Diesel (N47D20A)
  • 318d Diesel (N47D20C)
  • 320d Diesel (M47D20TU2OL)
  • 320d Diesel (N47D20A)
  • 320d Diesel (N47D20A)
  • 320d Diesel (N47D20C)
  • 320d EfficientDynamics Diesel (N47D20C)
  • 320d, -Xd Diesel (N47D20C)
  • 320d, -Xd M Performance Diesel (N47D20C)
  • 325d Diesel (M57D30T2)
  • 325d Diesel (N57D30A)
  • 330d Diesel (M57D30T2)
  • 330d, -xd Diesel (M57D30T2)
  • 330d, -xd Diesel (N57D30A)
  • 335d Diesel (M57D30T2)
  • 335i, -Xi Petrol (N54B30A)
  • 335i, -Xi Petrol (N55B30A)
  • 335is Petrol (N54B30A)
3-Series 2011-2020 33
  • 316d Diesel (B47D20A)
  • 316d Diesel (N47D20C)
  • 316i Petrol (N13B16A)
  • 318d, -xDrive Diesel (B47D20A)
  • 318d, -xDrive Diesel (B47D20A)
  • 318d, -xDrive Diesel (N47D20C)
  • 318i Petrol (B38B15A)
  • 320d EfficientDynamics Diesel (B47D20A)
  • 320d EfficientDynamics Diesel (N47D20C)
  • 320d, -xDrive Diesel (B47D20A)
  • 320d, -xDrive Diesel (N47D20C)
  • 320d, -xDrive M Performance Diesel (B47D20A)
  • 320d, -xDrive M Performance Diesel (N47D20C)
  • 320i EfficientDynamics, -LPG LPG,Petrol (N13B16A)
  • 320i Petrol (B48B20A)
  • 320i, -xDrive Petrol (B48B20A)
  • 320i, -xDrive, -LPG LPG,Petrol (N20B20B)
  • 325d Diesel (N47D20D)
  • 328i Petrol (N26B20A)
  • 328i, -xDrive Petrol (N20B20A)
  • 330d, -xDrive Diesel (N57D30A)
  • 330d, -xDrive M Performance Diesel (N57D30A)
  • 330e PHEV Electricity,Petrol (B48B20A+GC1)
  • 330i, -xDrive Petrol (B48B20B)
  • 335d xDrive Diesel (N57D30B)
  • 335i, -xDrive M Performance Petrol (N55B30A)
  • 335i, -xDrive M Performance Petrol (N55B30A)
  • 335i, -xDrive Petrol (N55B30A)
  • 340i, -xDrive M Performance Petrol (B58B30A)
  • 340i, -xDrive Petrol (B58B30A)
  • Active Hybrid 3 Electricity,Petrol (N55B30A)
  • M3 Petrol (S55B30A)
  • M3 Petrol (S55B30A)
3-Series 2019-2025 21
  • 316d Diesel (B47D20B)
  • 316d mHev 48V (MHEV),Diesel (B47D20B+JA1)
  • 318d Diesel (B47D20B)
  • 318d mHev 48V (MHEV),Diesel (B47D20B+JA1)
  • 318i Petrol (B48B20A)
  • 320d mHev, -xDrive 48V (MHEV),Diesel (B47D20B+JA1)
  • 320d, -xDrive Diesel (B47D20B)
  • 320e, -xDrive Electricity,Petrol (B48B20A+GC1)
  • 320i Petrol (B48B16A)
  • 320i, -xDrive Petrol (B48B20A)
  • 320i, -xDrive Petrol (B48B20B)
  • 330d mHev, -xDrive 48V (MHEV),Diesel (B57D30B+JA1)
  • 330d, -xDrive Diesel (B57D30A)
  • 330e, -xDrive Electricity,Petrol (B48B20A+GC1)
  • 330e, -xDrive Electricity,Petrol (B48B20B+GC1)
  • 330i, -xDrive Petrol (B48B20B)
  • M3 Competition, -xDrive Petrol (S58B30A)
  • M3 Petrol (S58B30B)
  • M340d mHev xDrive 48V (MHEV),Diesel (B57D30B+JA1)
  • M340i mHev, -xDrive 48V (MHEV),Petrol (B58B30B+JA1)
  • M340i, -xDrive Petrol (B58B30B)
Renew the turbocharger (03/2004 - ) 6h00
Renew the turbocharger 5h00–9h00
Renew the turbocharger ( - 02/2004) 5h00
Renew the turbocharger Rear-wheel drive 9h00
Renew the turbocharger Cylinders 4 - 6 17h00
Renew the turbocharger Cylinders 1 - 3, Rear-wheel drive 19h00
Renew the turbocharger Cylinders 1 - 3 19h00

What is the role of the BMW 3-Series turbo?

The turbocharger increases engine power by compressing the intake air, allowing more air (and therefore more fuel) into the combustion chambers. It is driven by exhaust gases spinning a turbine at speeds up to 250,000 rpm. The compressed intake air passes through an intercooler to reduce its temperature before entering the engine.

What are the symptoms of a failing BMW 3-Series turbo?

Common symptoms include: loss of engine power or boost, excessive exhaust smoke (blue/white for oil burning, black for over-fuelling), whining or whistling noise from the turbo area, engine warning light or turbo fault codes, oil leaks at the turbo housing, increased oil consumption.

What causes BMW 3-Series turbo failure?

The main causes are: oil starvation (blocked or restricted oil feed lines, low oil level, poor oil quality), foreign object ingestion, excessive exhaust temperature, worn bearings due to high mileage, and contaminated oil. Always investigate and fix the root cause before fitting a replacement turbo.

Can a BMW 3-Series turbo be reconditioned?

Yes, turbo reconditioning is a common and cost-effective alternative to buying new. A reputable service will disassemble, inspect, replace worn parts, rebalance, and test the unit. Expect to pay 30–60% of the new price.

Is it difficult to change a BMW 3-Series turbo?

Difficulty level 5/5: very technical. The turbo is connected to both the intake and exhaust systems, requiring numerous disassembly steps. Approximately 5 hours on average for a professional mechanic. Key precautions after fitting: change the engine oil and filter, prime the turbo with oil before starting, allow the turbo to cool down after hard driving by idling for 30 seconds before switching off.

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View your 3-Series maintenance plan (keep the 3-Series token) →

7 models covered

Model Year Range Engines covered Fuel
3-Series 1975-1983 1975-1983 315 Petrol (M10B16), 316 Petrol (M10B16), 316 Petrol (M10B18), 318i Petrol (M10B18), 320 Petrol (M10B20), 320 Petrol (M20B20), 320i Petrol (M10B20) Petrol
3-Series 1982-1995 1982-1995 316 Petrol (M10B18), 316i Petrol (M10B18), 316i Petrol (M40B16), 318i Petrol (M10B18), 318i Petrol (M40B18), 318is Petrol (M42B18), 320i Petrol (M20B20), 320i Petrol (M20B20), 320is Petrol (S14B20), 323i Petrol (M20B23), 323i Petrol (M20B23), 325e Petrol (M20B27), 325i, -ix Petr… Petrol
3-Series 1990-2000 1990-2000 316g (65/75 kW) CNG,Petrol (M43B16), 316i (73/75 kW) Petrol (M40B16), 316i, -LPG LPG,Petrol (M43B16), 318i (83/85 kW) Petrol (M40B18), 318i, -LPG LPG,Petrol (M43B18), 318is Petrol (M42B18), 318is, -LPG LPG,Petrol (M44B19), 320i Petrol (M50B20), 320i, -LPG LPG,Petrol (M52B20), 32… CNG, LPG, Petrol
3-Series 1998-2007 1998-2007 316 Ci Petrol (M43B16TU), 316i, -Ci, -LPG LPG,Petrol (M43B19TU), 316i, -ti, -Ci Petrol (N40B16), 316i, -ti, -Ci Petrol (N45B16), 316i, -ti, -LPG LPG,Petrol (N42B18A), 316i, -ti, -LPG LPG,Petrol (N46B18A), 316ti Petrol (N40B16), 318 Ci Petrol (N46B20), 318d Diesel (M47D20), 318d,… Diesel, LPG, Petrol
3-Series 2005-2013 2005-2013 316d Diesel (N47D20C), 316i Petrol (N43B16A), 316i Petrol (N45B16A), 318d Diesel (M47D20TU2uL), 318d Diesel (N47D20A), 318d Diesel (N47D20C), 318i Petrol (N43B20A), 318i Petrol (N43B20A), 318i, -LPG LPG,Petrol (N46B20B), 320d Diesel (M47D20TU2OL), 320d Diesel (N47D20A), 320d Die… Diesel, LPG, Petrol
3-Series 2011-2020 2011-2020 316d Diesel (B47D20A), 316d Diesel (N47D20C), 316i Petrol (N13B16A), 318d, -xDrive Diesel (B47D20A), 318d, -xDrive Diesel (B47D20A), 318d, -xDrive Diesel (N47D20C), 318i Petrol (B38B15A), 320d EfficientDynamics Diesel (B47D20A), 320d EfficientDynamics Diesel (N47D20C), 320d, -xD… Diesel, Electricity, LPG, Petrol
3-Series 2019-2025 2019-2025 316d Diesel (B47D20B), 316d mHev 48V (MHEV),Diesel (B47D20B+JA1), 318d Diesel (B47D20B), 318d mHev 48V (MHEV),Diesel (B47D20B+JA1), 318i Petrol (B48B20A), 320d mHev, -xDrive 48V (MHEV),Diesel (B47D20B+JA1), 320d, -xDrive Diesel (B47D20B), 320e, -xDrive Electricity,Petrol (B48B20… 48V (MHEV), Diesel, Electricity, Petrol

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Change Car Cabin Filter

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Very easy 0h30–0h45
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Technical 4h00–11h00
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Easy 1h30–17h00
Change Car Front Brake Pads

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Easy 0h45–12h00
Change Car Fuel Filter

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Easy 0h30–1h30
Change Car Glow Plugs

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Intermediate 0h45–7h00
Change Car Handbrake Cable

Change Car Handbrake Cable

Very easy 0h30–0h30
Change Car Oil Filter

Change Car Oil Filter

Easy 0h30–10h00
Change Car Particulate Filter (DPF)

Change Car Particulate Filter (DPF)

Easy 0h30–2h00
Change Car Rear Silencer

Change Car Rear Silencer

Easy 0h45–2h30
Change Car Shock Absorbers

Change Car Shock Absorbers

Easy 2h30–8h00
Change Car Spark Plugs

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Easy 0h30–4h00
Change Car Timing Belt Kit

Change Car Timing Belt Kit

Very technical 3h30–4h00
Change Car Water Pump

Change Car Water Pump

Easy 0h30–9h00
View the service schedule for your 3-Series →