As DW said, Tarka, which has no rear spare, has a big issue with lots of muck in the cabin. OK, but not on a wet road when the screen needs wipers on the inside!
There is no exhaust smell, but the BMW V8 seems to clean up the exhaust well, exhaust emission values from the MOTs show HC at 0ppm, the limit is 200ppm even though the lambda value is 1.030, the top limit.
