As with the exterior style of the Z4 M, the choice of Roadster or Coupe is just as important inside the car. This is because the Coupe offers slightly more headroom than the Roadster with its roof raised. Even so, anyone over six feet tall will find both cars tight on headroom.
Not one for the taller driver
Another deciding factor could be luggage space as the Roadster's boot provides 200 litres of space compared to the Coupe's 245 litres.
Furthermore, some owners have pointed out that the Coupe's cabin can feel quite sombre and plain when finished in black leather, though this is purely down to personal taste. The cabin should stand up well to use, though some of the finishes on the door handles and switches can wear and make the cabin feel a little tatty even when everything works.
The Z4 M's electrics are robust, but check the electric window regulators work and are not seized through wear. You may also hear the satellite navigation's DVD whirring away, but this is normal. The sat-nav is outdated by current standards but can be improved with an updated DVD disc that lets you type in full postcodes.
Coupe boasts 45 litres more than Roadster
Leather upholstery was standard for both Z4 M models and it should be in good condition. Check the outer bolster on the driver's seat for wear or scuffs, but most appear to have survived well as most Z4 Ms don't cover huge mileages. BMW offered an extended leather pack for the Z4 M, which covers the whole of the inside door card in leather, the centre console, sun visors and roof rail on the Roadster. There was also an optional carbon fibre effect finish for the leather on the centre console, while all Coupes came with an anthracite headlining as standard.
Rain-sensing wipers and cruise control were both options when the Z4 M was new, as was Park Distance Control rear parking sensors. This last is a desirable option.
"Options I like are rear PDC, folding mirrors and upgraded stereo, but an absolute must-have is the extended leather as it looks so much better inside with this."