What is the most common issue on the E46?
BMW 3 Series E46 – Common Problems, What to Look Out for, and More!
- BMW e46 Cooling System Failure/Leaks from Plastic Components:
- Weak Rear Shock Mount.
- Tail Light Failure.
- Crankcase Vent Valve Failure/Maintenance:
- Torn Front Axle Boots / Front Axle Failure (Xi AWD models only):
- M3 Camshaft Gear Bolt Failure (S54 only)
What is a BMW N42 engine?
The BMW N42 is a DOHC four-cylinder petrol engine which replaced the BMW M43 and was produced from 2001-2004. The N42 serves as the basis for the smaller N40 engine (which does not have Valvetronic). The N42B18 won the 1.4-1.8 L category of the International Engine of the Year awards for 2001.
What is the difference between BMW N42 and N46?
They are almost identical. The only difference is that the VVT is external on the N42 and internal on the N46. Easy to spot if you open the engine bay between the two.
How much horsepower does a BMW E46 have?
Petrol
| Model | Years | Power |
|---|---|---|
| 320i | 2000–2006 | 125 kW (168 hp) |
| 323i | 1998–2000 | 126 kW (169 hp) |
| 325i (EU) | 2001–2006 | 141 kW (189 hp) |
| 325i (US) | 137 kW (184 hp) |
How reliable are E46 M3?
It is a reliable DD if you keep up with maintenance and regularly cover your bases. However, it is not a cheap daily. Parts wear out quicker than in a typical car, and they cost more to repair or replace.
Are n42 engines reliable?
N42B20 Engine Problems and Reliability The timing chain is not very reliable. The noise can be from stretched timing chain or its tensioner. Timing chain life is about 60,000 miles.
Are N42 engines reliable?
Does N46 engine have vanos?
Premium Member. both have vanos and valvetronic eccentric cam technology which works in conjunction with each other…