Rear subframe mounting cracks (E46)
usually 120,000–250,000 km · High risk
Signs: Clunk from the rear, cracks in the floor pan
Fix: Weld reinforcement plates
€600–1,500
Common faults, service intervals and costs
BMW 3 Series (E46)
1998–2006
4
engines covered
18
known faults
78,033
roadworthiness tests in the statistics
22
official recalls
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The BMW 3 Series (E46) was built from 1998 to 2006.
For this generation we cover 4 engines and 18 known faults, each with the mileage range where it usually appears.
The most expensive known risk is Timing chain stretch: it usually appears at 120,000–200,000 km and costs €900–1,800 to fix.
In UK roadworthiness tests in 2024, at 150–200 thousand km this model most often failed on: lights, wipers and visibility (15.2 %), brakes (12.3 %), suspension (11.4 %). It fails less often than average on: suspension, steering, lights, wipers and visibility, body and corrosion, exhaust, emissions and leaks.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| 2.0–3.0 petrol 6-cyl (BMW M52TU / M54) | Petrol | Chain | 5W-30 / 10W-40 · BMW LL-01 / LL-98 · ~6.5 L · every 15,000 km |
| 1.6 / 1.8 / 2.0 petrol (BMW N42 / N45 / N46) | Petrol | Chain | 5W-30 · BMW LL-01 · ~4.25 L · every 15,000 km |
| 2.0d (BMW M47) | Diesel | Chain | 5W-30 · BMW LL-04 / LL-98 · ~5.2–6.5 L · every 15,000 km |
| 2.5 / 3.0d (BMW M57) | Diesel | Chain | 5W-30 · BMW LL-04 / LL-98 · ~6.5–7.5 L · every 15,000 km |
Faults typical of this model
Blower final-stage resistor
usually 100,000–220,000 km · Wear part
Signs: Fan stuck on one speed or dead
Fix: Replace the resistor
€60–150
Window regulators
usually 100,000–220,000 km · Wear part
Signs: Window drops or clicks
Fix: Replace the regulator
€100–250
Front control arm (thrust) bushes
usually 80,000–160,000 km · Wear part
Signs: Steering wheel shimmy under braking
Fix: Replace bushes
€150–350
Faults by engine
2.0–3.0 petrol 6-cyl (BMW M52TU / M54)
Cooling system (plastic parts)
usually 100,000–200,000 km · High risk
Signs: Overheating; expansion tank, radiator neck, water pump impeller
Fix: Replace cooling parts as a set
€400–900
Crankcase vent valve (CCV)
usually 100,000–200,000 km · Medium risk
Signs: Oil consumption, whistle, lean codes
Fix: Replace CCV and hoses
€150–400
VANOS seals
usually 120,000–220,000 km · Wear part
Signs: Rough idle, weak low-end torque
Fix: Replace seals
€150–450
Oil filter housing gasket
usually 100,000–200,000 km · Wear part
Signs: Oil leak
Fix: Replace gasket
€80–250
1.6 / 1.8 / 2.0 petrol (BMW N42 / N45 / N46)
Timing chain stretch
usually 120,000–200,000 km · High risk
Signs: Rattle on cold start, timing codes
Fix: Replace chain, guides and tensioner
€900–1,800
Oil consumption / valve stem seals
usually 120,000–200,000 km · Medium risk
Signs: Blue smoke, low oil
Fix: Replace valve stem seals
€500–1,200
Valvetronic motor / eccentric shaft sensor
usually 100,000–180,000 km · Medium risk
Signs: Rough idle, limp mode
Fix: Replace motor or sensor
€300–700
2.0d (BMW M47)
Swirl flaps
usually 120,000–200,000 km · High risk
Signs: Can break off into the engine
Fix: Replace or blank off
€200–500
EGR cooler / valve
usually 120,000–200,000 km · Medium risk
Signs: Power loss, EGR codes
Fix: Replace EGR components
€400–1,000
2.5 / 3.0d (BMW M57)
Swirl flaps
usually 120,000–220,000 km · High risk
Signs: Can break off into the engine
Fix: Remove / blank off or replace
€200–600
Turbo actuator (electronic)
usually 120,000–220,000 km · Medium risk
Signs: Limp mode, turbo codes
Fix: Replace the actuator
€300–700
EGR cooler / valve
usually 120,000–220,000 km · Medium risk
Signs: Coolant loss, power loss
Fix: Replace EGR cooler / valve
€400–1,100
Piezo injectors (M57N2)
usually 150,000–250,000 km · Medium risk
model years 2005–2010 only
Signs: Rough running, smoke
Fix: Replace injector
€400–1,200
Gearboxes
Manual
Clutch wear
usually 120,000–200,000 km · Medium risk
Signs: Slipping, high bite point
Fix: Replace clutch kit
€500–900
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
ZF 6HP mechatronic sleeve / fluid (2001–2012)
usually 150,000–250,000 km · Medium risk
model years 2001–2012 only
Signs: Harsh or delayed shifts, 'transmission fault'
Fix: Fluid + pan filter change, mechatronic sleeve seal
€400–1,500
Scheduled service
Intervals and typical prices for the 2.0–3.0 petrol 6-cyl (BMW M52TU / M54) 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 |
| 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 |
| Manual gearbox oilTransmission | every 150,000 km | €60–130 |
| 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: 78,033 tests.
| thousand km | 0–50 | 50–100 | 100–150 | 150–200 | 200–250 | 250+ |
|---|---|---|---|---|---|---|
| Brakes | 2.4 % | 6.1 % | 9.8 % | 12.3 % | 14.7 % | 16.2 % |
| Suspension | 2.9 % | 6.3 % | 9.4 % | 11.4 % | 12.7 % | 14.4 % |
| Steering | 0.0 % | 0.4 % | 0.6 % | 1.0 % | 1.7 % | 2.7 % |
| Tyres and wheels | 1.5 % | 3.9 % | 5.4 % | 6.9 % | 8.0 % | 9.3 % |
| Lights, wipers and visibility | 4.9 % | 9.8 % | 13.1 % | 15.2 % | 17.8 % | 18.9 % |
| Body and corrosion | 0.5 % | 1.0 % | 1.9 % | 2.9 % | 3.5 % | 4.0 % |
| Exhaust, emissions and leaks | 1.8 % | 2.4 % | 5.0 % | 6.3 % | 6.4 % | 4.9 % |
Owner complaints in the US
Which systems owners reported to the US agency NHTSA and at what mileage. Complaints are not confirmed faults and some relate to recalls. Sample: 3,539 complaints.
Official recalls
Recalls the manufacturer published in the United Kingdom for this model (22). The same recalls usually apply across Europe. Ask an authorised dealer to check by VIN whether your car is affected and whether the work has been done.
- Airbag Replace the Driver’s Airbag – Takata PSDI-512/01/2026 · R/2025/327
- Airbag Takata Driver and/or Passenger Airbag Recall (Global VINs)18/12/2025 · R/2025/349
- Airbag Replace the Front Passenger Airbag Takata PSPI06/10/2025 · R/2025/323
- Airbag Check Driver’s Airbag for Conversion Takata SDI & PSDI-521/10/2024 · R/2024/403
- Airbag Replacing the Driver’s Airbag PSDI-518/03/2024 · R/2024/132
- Steering Some vehicles may be susceptible to damage to the anti-corrosion coating of the lower steering shaft13/07/2021 · R/2021/268
- Airbag Driver's front takata (nadi) airbag inflator may rupture on deployment09/03/2020 · R/2019/403
- Airbag Potential rupture of driver front air bag inflator22/03/2019 · R/2019/086
The other recalls (14) are listed in the app.
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 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 (E36) 1990–2000BMW 6 Series (F12) 2011–2018BMW 7 Series (G11) 2015–2022
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. 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 07/10/2026