Raced and beat a CLS500 today with my 320CDI..
The light turns green, and he pulls out at a moderate speed, as I do.. then he looks over at me and appears to gun it.. so I did the same.. and even though he got an edge on me, by the time we broke it off (doing about 65+ in a 40mph zone) I was at least two car lengths ahead of him. Needless to say, he didn't have the guts to make eye to eye with me after than, knowing that his 5.0 V8 was just smoked by a 3.2 I-6 (diesel to boot!)..
After today, I finally got the meaning of the old saying that "Horsepower sells cars, and Torque wins races"..
To be fair, I have the Renntech tuning which adds about 10% to the HP and torque, and we never got to open them up all the way, where I would have probably fallen on the back side of the power curve at above 110mph while he still had more room on the RPM gauge.. but it was nice to embarrass that ***!
:p
Last edited by Sam Samaha; Jun 16, 2005 at 09:57 PM.

OR I'll just cut and paste the post there myself!
Last edited by Sam Samaha; Jun 16, 2005 at 10:16 PM. Reason: I'll just post it there myself...
Anyway, most published 0-60 figures have the CLS500 around 5.5 seconds and the E320 CDI around 7.0 seconds. I realize that time-to-distance isn't the same as time-to-speed, and over whatever distance you and the CLS sparred, your CDI might have been quicker due to massive low-end torque. Still, the significant difference in 0-60 times makes me wonder if the guy in the CLS had his heart - and his foot - 100% committed to the competition. We'll never really know.
Anyway, most published 0-60 figures have the CLS500 around 5.5 seconds and the E320 CDI around 7.0 seconds. I realize that time-to-distance isn't the same as time-to-speed, and over whatever distance you and the CLS sparred, your CDI might have been quicker due to massive low-end torque. Still, the significant difference in 0-60 times makes me wonder if the guy in the CLS had his heart - and his foot - 100% committed to the competition. We'll never really know.
Anyway, most published 0-60 figures have the CLS500 around 5.5 seconds and the E320 CDI around 7.0 seconds. I realize that time-to-distance isn't the same as time-to-speed, and over whatever distance you and the CLS sparred, your CDI might have been quicker due to massive low-end torque. Still, the significant difference in 0-60 times makes me wonder if the guy in the CLS had his heart - and his foot - 100% committed to the competition. We'll never really know.
yeah.. I re-posted my thread over there, and my theory as well, which is that since we pounced on it at about 30mph, my low end torque got the better of him thru about 65... but had this been a 0-60 he would have gotten me by about 1 seconds... I timed my car 3 times 0-60 (non-scientific stopwatch with friend in car method).. and averaged 6.5 sec. The 10% more power from the Renntech may be a factor, but I've read 0-60's on the CDI of everywhere from 6.6 to 7.2 in the media and in MBs on figures.
I have to wonder if the gearing on the CLS500 is different and favors 0-60, since the E500 which is a bit lighter doesn't get 5.5 sec to 60... Both have a 7 speed too. The CDI is about 3835 empty (Car & Driver claims it's closer to 4000), the CLS is about to 4050, while the 500 is about 3812.. but published figures are 5.9 sec vs the CLS' 5.5, am I missing something?
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The light turns green, and he pulls out at a moderate speed, as I do.. then he looks over at me and appears to gun it.. so I did the same.. and even though he got an edge on me, by the time we broke it off (doing about 65+ in a 40mph zone) I was at least two car lengths ahead of him. Needless to say, he didn't have the guts to make eye to eye with me after than, knowing that his 5.0 V8 was just smoked by a 3.2 I-6 (diesel to boot!)..
After today, I finally got the meaning of the old saying that "Horsepower sells cars, and Torque wins races"..
To be fair, I have the Renntech tuning which adds about 10% to the HP and torque, and we never got to open them up all the way, where I would have probably fallen on the back side of the power curve at above 110mph while he still had more room on the RPM gauge.. but it was nice to embarrass that ***!
:p
The NA cls, losing about 3% hp/1000' elevation gain might not have the edge vs a tuned turbo at 2165' above sea level.
Say'n.
Let's leave this beaten horse dead.
I had an '05 CDI at the same time my friend owned an E500 of the same year. He was not amused that I could easily beat him in a short race. It is possible he might have a higher top end than 132mph, but the diesel wasted no time hitting that speed limiter at 6500'. Part of that may be the power losses of a 4matic compared to the rear wheel drive efficiency of the CDI, but there was no question who won the heat.
Last edited by rapidoxidation; Dec 16, 2025 at 09:55 AM.







