I have always noticed that larger engines have lower speeds at the same speed than smaller engines. And yes, knowing that the translations from manufacturer to manufacturer are different, my finding also refers to the engines of one and the same series of vehicles. I was able to make my findings particularly well with the following comparison series: E-Class W211 E200 compressor (1.8L), 5-speed converter automatic E-Class W 211 E240 (2.6L), 5-speed automatic converter E-Class W211 E320 (3.2L), 5-speed automatic converter 3 Series E46 316i (1.8L), 5-speed manual switch 3 Series E46 318i (1.9L), 5-speed manual switch 3 Series E46 320i (2.2L), 5-speed manual switch 3 Series E46 323i (2.5L), 5-speed manual switch What I thought about: It can’t be that the manufacturers have their own gearbox with different translations for each motorization. My conclusion: The crankshaft of the engine has an output. there (first) gear is the point that varies in size. Thus, the gear is always the same and always multiplied by the same factors. Only the respective engine delivers its own “initial” value. Ask yourself: Is my conclusion correct?