Controlled Auto-Ignition (CAI) combustion has been realised in a production type 4-stroke multi-cylinder gasoline engine. The engine is based on a Ford 1.71 Zetec-SE 16v engine using substantially standard components modified only in design dimensions in order to significantly increase the trapped residuals. The engine is also equipped with Variable Cam Timing (VCT) on both the intake and exhaust camshafts. CAI combustion is achieved by only using hot internal residuals, and a range of loads between 0.5 and 4 bar bmep and engine speeds between 1000 and 3500 rpm are mapped for CAI fuel consumption and exhaust emissions. The measured CAI results are compared with those of spark ignition (SI) combustion in the same engine at the same speeds and loads. The comparison shows that a more than 30% reduction in bsfc and up to 99% reduction in NOx at low loads can be reached. European New Emission Drive Cycle (NEDC) is simulated for a vehicle equipped with such a CAI combustion engine. Fuel consumption and emissions are compared with an SI engine vehicle undergoing the same drive cycle.