Well, in the first place modern era Bimmers r not marketed as a reliable car they are rather marketed as ultimate drivin machines, so its better not to expect reliability in the first place. New bimmers suck in terms of design, older bmw's specially E-36,E-40,E-46, gotta benchmark design in sedans. As far as mercedes is concerned grandfather is a die-hard mercedes fan got almost every model since 65', so quite familiar with it. Ther quality went to ther knees in last 3-4 yrs. The new C Class sucks big time, really really pathetic, Airbags ain't deploy in a crash, lotta cabin noise, nd other glitches here nd ther. Ther earlier C-180 was quite gudd, 280 SEL was way too much gudd, 280 SEC Coupe was hell lotta tough, 70's 200D's engine was probably made in NASA lab still running strong after 400k miles. I wonder how, but newer models lack tht oomph factor. Apart, frm tht both bimmers nd MB's got very pathetic styling, they r quite inspired by Japs interms of styling, tht old sedan touch is missing rather they r making it more cosmetic instead of givin it an elegent touch.
Thnxx..