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Mercedes-Benz C350 & C280
Even so, the new 350 engine is very impressive on paper and seems like it would be a great driver in a C-Class sedan, especially when teamed-up with the new 7-spd. tranny.
I was not completely shocked that the new 350 wasn't among Wards' top 10, but I was surprised to read their comment about it that it was "un-fun," apparently because it was working against a heavy-feeling flywheel.
Maybe the balancing shaft is bigger or heavier or rotates backward faster than in our 320, but I cannot see how the new 350 would not impress me considering the increase in hp and more torque at an even lower rmp compared to our 320.
My guess is that the new 350 may sacrifice a little in potential "fun" to meet the newest EU-4 pollution standards and that is probably why it does not post the numbers that the toyota and nissan 3.5s offer -- or, maybe it is just more conservatively engineered, e.g., lower compression.
I will be interested to test drive a C350 and also, hearing the comments of any SLK350 owners that are happy with their engines and 7 spd. autos. Thanks.