My wife had a 318 e46 and we used BMTechniques in Bayswater - again not cheap but they were very thorough and easy to deal with. As mine is out of warranty Im thinking of doing all the oil changes myself and just an annual service at the shop.

Cheers

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X5 4.4i 2006 sports package, Titanium silver, Sports exhaust with Xpipe, Limo tint, 20" wheels 168's (Black), 25mm H&R wheel spacers& arch flares all round - Loud........

Work in progress -:
Replace BMW Ipod system with DICE - installed but no sound yet??