Quote:
Originally Posted by msmatt
So the new rules in EU drove Porsche back to a 4.0L NA flat six and there have been rumors that this engine will displace the turbos in the regular 911’s. So who’s up for a 3.5-4.0L NA inline in the next M2? Do we know how much displacement can be added to the current crop of BMW 6’s?
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No, Porsche reintroduced the flat-6 for the Boxster and Cayman because of criticism how the 4-cyl sounds. And people vote with their wallets + look at what the competition has on offer.
The 4-cyl replaced the 6-cyl in June 2016. Boxster and Cayman became "718 Boxster" and "718 Cayman". The flat-6 returned in 2019 with the GT4 & Spyder and in 2020 with the GTS 4.0.
Official U.S. retail figures for Boxster and Cayman (sources:
2017,
2018,
2019 and
2020):
- 2016: 6260 (981 + 718)
- 2017: 5087 (718)
- 2018: 5276 (718)
- 2019: 3880 (718)
- 2020: 3447 (718)
For the rest: EU emissions regulations force manufacturers to reduce CO
2 and exhaust noise. EU emissions regulations do not impose the way how to do it - it's up to manufacturers to figure out how to stay under the imposed limit.