I think mine would be a Ford Focus 1.0 with auto stop/start. It barely had enough power to pull itself along, why bother with the stop/start thingy?!
I was at first going to say an Alfa Romeo Giulietta because I had asked for a Mercedes C class, but it was quite a nice car to drive.
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Cars...
'93 Audi Coupe 2.0 Alpine White (sold)
'99 Audi S4 Merlin Purple - K04 upgrade to 412hp (sold)
'00 Audi S8 Agate Grey (Sold

)
'11 Audi Q7 4.2tdi Unknown Red (Classic Red Pearl Effect - thanks MJ)