Hello, I compared an E-Class (as a combi) s124 and an S-Class w140: At 120 km/h their consumption is exactly the same with 10.7 litres – although the S-Class has an automatic transmission (five-speed) and the E-Class has a five-speed transmission (which should actually be more economical).https://www.auto-motor-und-sport.de/…/ or https://mb-w140.de The air resistance of the 300 TE and the S-Class w140 is quite similar: http://rc.opelgt.org/indexcw.php can an S-Class at a constant 120 have the same consumption as a much smaller combination nowadays? Greeting Stefan