Thinking of buying a BMW E46 in the UK? It's a fantastic car, but like any model of its age, there are key things to watch out for, especially with our lovely British weather! This thread aims to be a go-to resource for potential buyers.
Let's discuss the most common E46 problems to check before you hand over your cash:
Key Areas to Inspect:
- Rust Hotspots: Where do E46s typically rust in the UK? Front and rear wheel arches? Sills? Boot lid? Jacking points? Please share your photos and experiences!
- Rear Subframe Mounts: The infamous E46 rear subframe cracking issue. How prevalent is it on UK cars (saloons, coupes, tourings)? How can a buyer check for cracks or previous repairs? What are the tell-tale signs (e.g., clunking)?
- Cooling System Weaknesses: Expansion tank, water pump, thermostat, hoses. What are the early warning signs of failure? Recommended preventative replacements?
- Suspension Bushings: Front control arm bushings (FCABs), rear trailing arm bushings (RTABs). How to spot wear?
- Oil Leaks: Common culprits like the valve cover gasket (rocker cover gasket), oil filter housing gasket (OFHG).
- Petrol Specifics (e.g., M54, N42/N46): VANOS seals/rattles, CCV system, DISA valve, timing chain issues on N-series engines.
- Diesel Specifics (e.g., M47N - 320d): Swirl flaps (check if deleted!), turbo health, injector issues.
- Electrical Gremlins: Window regulators, central locking, ABS/DSC sensors, final stage resistor (FSR).
- What are your top pre-purchase inspection (PPI) tips for an E46 in the UK?
- Are there any model year specific issues to be aware of (pre-facelift vs. facelift)?
- What's a realistic budget for a decent E46 in the UK market today, factoring in potential initial maintenance?
Remember to mention the E46 model (e.g., 330i Saloon, 320d Touring) and year you're referring to.
