Was at a meeting this morning and got chatting to what turned out to be another petrolhead who's just bought a brand new M4. He loves the car but the sound that emits from the exhaust is actually quite offensive and it's starting to take the gloss off the ownership quite quickly for him. So it got us wondering, how do car manufacturers make an engine sound good? Some are famous for consistently making great soundtracks (Mercedes/Jaguar/Maserati), whereas others just don't seem to get it right (BMW/Audi). And yes there will be exceptions to the rule, but is it just a case of certain manufacturers don't put it high on their priorities?