turbo x500What do most people want from a turbo? They want the fastest spool, but don’t want to sacrifice top end power. The X500+ offers both, on an almost unbelievable level. The Boost ControlledIn terms of petrol engines, the entry-level 1.6-litre unit has an average of 42.2mpg and 147gkm, while the turbocharged 1.4 with 138bhp is the more economical choice at 47.1mpg