I believe they tend to put the lowest average figure just to stop anyone dynoing it and then sueing if there is less power, apparently something that happened in the states. Although the figures tend not to be at the wheels which seems odd to me.
Quite like the black wheels though.
It's true Ryan. A well known automotive company in the US was sued because a customer's muscle car made nothing like the performance figures quoted. From that point on, manufacturers were very careful to quote exactly how their performance figures were certified - for instance what fuel RON was used.
In this instance air temp and humidity will have an effect because most manufacturers are required to certify at 25c. Those 10 degrees and 44% humidity will increase power by some way due to much denser air and it also depends on the correction factor which is driven by temp and baro pressure. I don't speak german but it doesn't look to me like there is one applied here.
Oh, and PS is not a straight conversion to HP. To get HP, multiply kW by 1.341
For info, no manufacturer would likely underquote performance figures but there is a thing called C.O.P which means conformance of production: basically any engine made should be within 5% of the certified performance figures.
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