RSchneider
Elio Addict
I bought a 2003 Z4 brand new and put 140k on it in 11 years. Only ICE problem was a faulty changeover valve covered under warranty. It took the dealer 5 minutes to change. Other than that, 10K oil changes, 50K spark plugs, 40K air filter (the long life one) and a drive belt at 100k. Never changed the fuel filter/regulator/pump. If you look at the unit, it’s a screen like every other German car I’ve seen. BMW uses a running losses system where there is no return line. Just a pressure.Wait a second... "Most cars today don't even have fuel filters"? Mine has 2. The 2003 BMW Z4 had an integrated fuel filter/regulator - part number 16-11-7-197-690. They call it "Fuel filter pressure regulator". You are correct that the Z4 didn't have a separate fuel filter. You probably wouldn't change that filter regulator very often but at $260, it wouldn't take very often for that to get old.