Which is the best automatic car
Audi A6, BMW 5 Series, Mercedes E-ClassWanted: the best Automatic in the world
For the first time, Mercedes is using an automatic transmission with nine speed levels. Initially, the new switching technology is only available in the E 350 BlueTec. The "natural opponents" are calledAudi A6 3.0 TDI and BMW 530d.
The comparison, which only evaluates the motor-gearbox unit, is particularly exciting. Because while Audi relies on the dual clutch transmission with seven gears, BMW relies on the eight-speed sports automatic (plus 250 euros) from ZF.
Apart from the technical details - the central question is always: How does it work? AUTO BILD has tried it.
For the Mercedes, the answer is: wonderfully relaxed. The enormous 620 Newton meters of torque of the three-liter diesel in the E-Class would probably still be able to cope with a three-stage automatic, but we would then be much more hectic on the road.
The huge ratio spread from the first to the ninth gear is at least 9.15 for the Benz - Audi manages about eight, BMW seven. Together with the long final drive ratio of the E 350 BlueTec, its V6 diesel often just has to struggle above idle speed, and the load purrs away, murmuring peacefully and gently whispering away.
It's crazy: at a maximum speed of 250 km / h, the crankshaft rotates a mere 2700 times per minute in top gear. In the BMW there are already 3200 revolutions, in the Audi there are another 500 revolutions more. On long journeys, there is definitely no better sedative than the 9G-Tronic from Mercedes.
The coziness of the star automatic brings with a committed driving style, however, disadvantages.
Gear changes take a little longer, while the lightning-fast manual downshifting through three or four gears is clearly faster for BMW and Audi. In addition, the E-Class can never completely hide the first four gear changes, there is always a very brief interruption in the frictional connection. Sure, the transitions take place smoothly and smoothly, but the front passenger can still count the gear changes and then always knows which gear is active. In the BMW 5 Series and the Audi A6, he can forget that - he definitely doesn't notice any shifting here.
Absolutely jerk-free shifting was practically inherited in the Audi's dual clutch transmission. Because two shift shafts with two clutches alternately shift gears, there are simply no interruptions in tractive power.
We simply have to congratulate BMW on choosing ZF as an automatic partner. Even though trailer captains are still annoyed when maneuvering that the selector lever automatically jumps to "P" when the door is opened. We currently do not know a better switch box Tachometer notices.
Obviously, with the "8HP" from ZF and the three-liter in-line six-cylinder from BMW, two that are meant for each other have been found. Despite comparable performance, the BMW not only gets going faster than Audi and Mercedes in this comparison, it also consumes the least. We don't have to say a lot about the few tenths of a mileage here. The fact that the BMW storms to 100 km / h in 6.3 seconds is impressive. But the 6.6 seconds for the Audi and 6.7 seconds for the Benz do not give cause for concern.
|Wanted posters||Audi A6 3.0 TDI Quattro S-tronic Clean Diesel||BMW 530d sports automatic||Mercedes E 350 BlueTec 9G-Tronic|
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