The first fruits of BMW Group and PSA Peugeot CitroÃ«n’s collaboration is the Prince Engine, used in a few Peugeot cars like the 307, 207, 207 GT and the upcoming 207 GTI and BMW’s new 2nd generation MINI Cooper and MINI Cooper S (1.6 normally aspirated and turbo variants) as well as the upcoming MINI One (1.4 litre variant).
The Prince engine family has a 84 mm cylinder spacing and a 77 mm bore, with stroke varied to create two displacements – 1.4 litres and 1.6 litres. The 1.4 litre and 1.6 litre normally aspirated variants feature Valvetronic variable valve timing and a throttle butterfly-less design. The screamer is a 1.6 litre turbocharged variant, featuring a twin scroll turbocharger and gasoline direct injection, without the Valvetronic though. I’ve driven the MINI Cooper S featuring the new 1.6 litre turbocharged engine and it’s really something that takes your breath away – trust me!
The next step – more four-cylinder engine collaborations! We might see larger displacement 1.8 to 2.2 litre four cylinder engines that might end up in cars like the next generation 116i, 120i and the 320i, some of the lower-end BMWs that use four cylinder engines. While nothing is confirmed yet, a joint feasibility study is currently underway to study expected technological, industrial and financial benefits.