Front control arm bushes
usually 80,000–160,000 km · Wear part
Signs: Shimmy under braking
Fix: Replace bushes / arms
€250–600
Common faults, service intervals and costs
BMW 8 Series (G15)
2018–now
3
engines covered
8
known faults
5,378
roadworthiness tests in the statistics
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The BMW 8 Series (G15) has been built since 2018.
For this generation we cover 3 engines and 8 known faults, each with the mileage range where it usually appears.
The most expensive known risk is Injectors and ignition coils (V8 twin-turbo): it usually appears at 60,000–140,000 km and costs €600–2,500 to fix.
In UK roadworthiness tests in 2024, at 0–50 thousand km this model most often failed on: tyres and wheels (10.4 %), lights, wipers and visibility (1.6 %), brakes (0.2 %). It fails more often than an average car of the same age and mileage on: tyres and wheels. It fails less often than average on: lights, wipers and visibility.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| 3.0 petrol (BMW B58) | Petrol | Chain | 0W-30 / 5W-30 · BMW Longlife-01 FE / LL-17 FE+ · every 15,000 km |
| 3.0d (BMW B57) | Diesel | Chain | 5W-30 / 0W-30 · BMW LL-04 · ~6.5 L · every 15,000 km |
| 4.4 V8 twin-turbo (BMW N63) | Petrol | Chain | 0W-30 / 5W-30 · BMW LL-01 / LL-04 · ~8.5–10 L · every 15,000 km |
Faults typical of this model
Run-flat tyres (harsh, expensive)
usually 0–300,000 km · Wear part
Signs: Harsh ride; expensive to replace
Fix: Budget accordingly
free / recall
Faults by engine
3.0 petrol (BMW B58)
Coolant loss (plastic coolant pipes / expansion tank)
usually 80,000–180,000 km · Medium risk
Signs: Coolant warning, sweet smell, level drops
Fix: Find and replace the leaking pipe or tank
€150–600
Oil filter housing gasket leak
usually 100,000–200,000 km · Wear part
Signs: Oil smell, oil on the engine or the drive belt
Fix: Replace the gasket
€150–500
3.0d (BMW B57)
AdBlue / NOx sensor
usually 80,000–180,000 km · Medium risk
Signs: AdBlue warning
Fix: Replace sensor or doser
€300–900
4.4 V8 twin-turbo (BMW N63)
Injectors and ignition coils (V8 twin-turbo)
usually 60,000–140,000 km · Medium risk
Signs: Misfire, rough cold start, smell of fuel
Fix: Replace the injectors with the latest version, plus coils and plugs
€600–2,500
Turbo coolant and oil lines leaking (engine valley)
usually 80,000–180,000 km · Medium risk
Signs: Smell of coolant, low coolant warning, oil smoke from the top of the engine
Fix: Replace the lines and seals in the engine valley
€600–2,000
Gearboxes
Steptronic (ZF 6HP / 8HP)
Torque converter / valve body
usually 150,000–250,000 km · Wear part
Signs: Delayed or harsh shifts
Fix: Fluid service, repair
€300–2,500
Scheduled service
Intervals and typical prices for the 3.0 petrol (BMW B58) engine. Other engines differ in oil, timing drive and some filters; the app gives the exact plan.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| Automatic transmission fluidTransmission | every 90,000 km | €200–450 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Timing chain inspection (listen on cold start)Engine | every 150,000 km | €0–120 |
| Front brake padsBrakes | usually at 30,000–60,000 km | €60–150 |
| Front brake discs + padsBrakes | usually at 60,000–120,000 km | €150–320 |
| Rear brake padsBrakes | usually at 50,000–90,000 km | €50–130 |
| Tyres (set of 4)Wheels | usually at 40,000–60,000 km | €320–700 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
Roadworthiness tests by mileage
Share of tests in the United Kingdom (DVSA MOT, 2024) that this model failed because of each system. Bold red means more often and green less often than an average car of the same age and mileage. Sample: 5,378 tests.
| thousand km | 0–50 | 50–100 |
|---|---|---|
| Brakes | 0.2 % | 0.7 % |
| Suspension | 0.1 % | 0.4 % |
| Steering | 0.0 % | 0.0 % |
| Tyres and wheels | 10.4 % | 10.8 % |
| Lights, wipers and visibility | 1.6 % | 2.0 % |
| Body and corrosion | 0.1 % | 0.2 % |
| Exhaust, emissions and leaks | 0.2 % | 0.9 % |
Common questions
Does the BMW 8 Series (G15) have a timing chain or a timing belt?
3.0 petrol (BMW B58): chain; 3.0d (BMW B57): chain; 4.4 V8 twin-turbo (BMW N63): chain.
What are the known problems with the BMW 8 Series (G15)?
The faults with the highest risk: injectors and ignition coils (V8 twin-turbo) (60,000–140,000 km, €600–2,500); turbo coolant and oil lines leaking (engine valley) (80,000–180,000 km, €600–2,000); adBlue / NOx sensor (80,000–180,000 km, €300–900); coolant loss (plastic coolant pipes / expansion tank) (80,000–180,000 km, €150–600). The full list by engine is on this page.
What does the BMW 8 Series (G15) most often fail its roadworthiness test on?
In UK roadworthiness tests in 2024, at 0–50 thousand km this model most often failed on: tyres and wheels (10.4 %), lights, wipers and visibility (1.6 %), brakes (0.2 %). It fails more often than an average car of the same age and mileage on: tyres and wheels. It fails less often than average on: lights, wipers and visibility.
What should you check when buying a used BMW 8 Series (G15)?
Before you buy, ask an authorised dealer to check by VIN whether the car has any open recalls. On the test drive, watch for these signs: misfire, rough cold start, smell of fuel; smell of coolant, low coolant warning, oil smoke from the top of the engine. The full checklist is in the guide to buying a used car.
Other generations
BMW 1 Series (E87) 2004–2011BMW 1 Series (E81/E82/E88) 2007–2013BMW 1 Series (F20) 2011–2019BMW 1 Series (F40) 2019–2024BMW 2 Series Active Tourer (F45) 2014–2021BMW 3 Series (E46) 1998–2006BMW 3 Series (E90) 2005–2012BMW 3 Series (E91/E92/E93) 2005–2013BMW 3 Series (F30) 2012–2019BMW 3 Series (G20) 2019–BMW 4 Series (F32) 2013–2020BMW 5 Series (E39) 1995–2004BMW 5 Series (E60) 2003–2010BMW 5 Series (F10) 2010–2017BMW 5 Series (G30) 2017–2023BMW 5 Series (G60) 2023–BMW 3 Series (E30) 1982–1994BMW 3 Series (E36) 1990–2000BMW 1 Series (F70) 2024–BMW 2 Series Coupé (F22) 2014–2021BMW 2 Series Coupé (G42) 2021–BMW 2 Series Gran Coupé (F44) 2020–2024BMW 2 Series Gran Tourer (F46) 2015–2022BMW 2 Series Active Tourer (U06) 2021–BMW 4 Series (G22) 2020–BMW 6 Series (E63) 2003–2010BMW 6 Series (F12) 2011–2018BMW 6 Series Gran Turismo (G32) 2017–2023BMW 7 Series (E65) 2001–2008BMW 7 Series (F01) 2008–2015BMW 7 Series (G11) 2015–2022BMW 7 Series (G70) 2022–
Models with the same engines
These models share engines with this car, so they share some of its faults too.
BMW X3 (G01) 2017–2024BMW X5 (G05) 2018–BMW X4 (G02) 2018–BMW X3 (G45) 2024–BMW Z4 (G29) 2018–BMW X6 (G06) 2019–BMW X7 (G07) 2019–
Other BMW models
BMW X2 (F39) 2018–2023BMW i4 2021–BMW iX 2021–BMW X1 (F48) 2015–2022BMW X1 (U11) 2022–BMW X4 (F26) 2014–2018BMW X6 (F16) 2014–2019BMW i3 2013–2022BMW X2 (U10) 2023–BMW X5 (F15) 2013–2018
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026