The VTi Engine (Variable Valve Lift and Timing injection) is a variable valve timing (VVT) system for Prince engine created jointly by both PSA (Peugeot,Citroën,DS Automobiles) and Mini from the BMW Group. There is both a 1.4l (95 bhp) and 1.6l (115 bhp) variant, with Peugeot claiming the capability to reduce fuel consumption on a Peugeot 307 by more than 10% compared to the 1.6l, 100 bhp engine.