Yeh I'm on your side mate , I took my last Lexus 250 in for the stereo repaired , when I collected the car the console had been scratched and touched up with paint . It was mint when I took it in and they said they hadn't done anything . Tickled me that . So I told them one of them will be wearing the console if they didn't replace it . Confidence shattered.I purchased my isf from a dealer no names mentioned as the sales were brill but when I got it home , I checked everything , bare in mind the car was so called fully serviced and checked ready to go . I gave them a week to get it ready . The battery was loose, the air filter had straw in it and was black , the pollen filter was rotten, the front tyres has 15 psi 20 psi ,the rear wheel arches were full of mud inside ,ready to go . Hmm bull .full Lexus history mine has . Mite have well have been fully serviced by my 90 year old grandma with her jam jar bottom glasses .
But yeh I do all my own maintenance anyway mate , brakes etc the lot .