When new, the cost of a 2003 BMW M3 coupe was $46,500 MSRP. Convertible models were about an $8,000 premium over the coupe. At the time, the Competition Package was an extra $4,000. Over the This article will help you understand what you might expect as a new E46 M3 owner or if your M3 is climbing to higher mileage as you enjoy it and what E46 parts you need to keep it reliable. Rod Bearings. If you are looking for an E46 M3, you’ve probably heard about the rod bearing issue. The S55 has a bore of 84 mm, a stroke of 89.6 mm, and a compression ratio of 10.2:1. The engine comes with different power outputs, based on specific models and variants: Makes 275 hp in the F87 The only other major thing to look for on the S54 is VANOS. The solenoid can go out without warning and BMW only officially sells the whole module. There are much cheaper rebuilt aftermarket units you can go with though. For the E46 M3 chassis in general, early models had subframe issues.
Main trouble spots are all the rubber and plastic bits in the cooling system and around the intake manifold (cracked rubber hoses and stuff causing vacuum leaks), and old leaky valve cover gasket. Vanos can be problematic, especially if the car has had infrequent oil changes, but can also work fine forever.
E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Content on E46 Fanatics Forum is generated by its users. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG. Well, my 2004 320ci just started misfiring yesterday. INPA says 239 cylinder 2 misfire.
Howmany keys do you have. If you have 2 try other one. EWS not receiving signal from key = no start. Check power at starter it will be the 10mm nut on starter. If getting power bad starter. If no power you have other problem. I see lots of keys go bad. Sent from my SCH-I500 using Bimmer App. K.
The heart of the E46 M3 is its engine, a 3.2-liter inline six-cylinder that produces an impressive 338 horsepower. That might not seem like much by today's standards, but in 2000, it was enough to Worth replacing all the hoses, the thermostat, and, probably, the radiator. Since all E46 engines feature aluminum cylinder heads, from the moment you'll notice that the water gauge is on the red

Ride: 6/10. The M3 is a hard-edged performance car, so don't expect to cruise in total comfort. The suspension is stiff enough that you will be well acquainted with the bumps in the road. But here

Check your fuses, relays, wire harnesses under the hood, especially near exhaust. It is possible that some wires got displaced and melted due to heat causing a short. I would care fully check the SMG pump and wire going to it. I am not too much help with SMG, as mine is stick shift but that would be my route of debugging it. .
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    • bmw m3 e46 common issues