E46Forum.co.uk

Hi everyone,

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).

Share Your Tips:

• 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?

Let's help fellow UK enthusiasts make informed E46 purchases! Please share your wisdom, photos, and any horror stories to learn from.

Remember to mention the E46 model (e.g., 330i Saloon, 320d Touring) and year you're referring to.