Which used BMW 6 Series coupe should I buy?
If you are planning on using your BMW 6 Series as it was intended – in other words, for long trips – then you should choose the diesel model. Its breadth of abilities makes it our recommended engine option.
If you do shorter journeys or you mostly drive in a big city, the 640i would be a suitable alternative, even if it does cost more to run.
We’d suggest sticking with SE trim, because it comes with all the equipment you really need: 18in alloy wheels, two-zone climate control, cruise control, leather seats (the front ones are heated), parking sensors front and rear and sat-nav.
Sport is the entry point for the 650i and comes with 19in wheels and comfort front seats with lumbar support. The M Sport comes with sportier exterior styling but doesn’t have any useful additional equipment. The M6 has adaptive LED headlights, four exhaust pipes, bigger brakes, a carbon fibre roof, an upgraded stereo and ‘M’ styling tweaks inside and out,
Our favourite BMW 6 Series: 640d SE