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Old 10-28-2005, 07:51 PM
james54
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New MB Owner

Hi, I'm a 1st time MB owner. I just purchased a 1991 190e 2.6 with 66,000 miles. My question is this; when driving at 70mph the engine revs out at 3500 rpm. Is this normal? It seems high, but then I've never owned one of these beautiful machines. Thanks

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Old 10-28-2005, 08:57 PM
Ali Al-Chalabi's Avatar
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Yeah, they rev really high on the highway. The transmission is a 1:1 ratio in 4th gear, so it has no overdrive. Also, it does not have a torque converter lockup clutch. This combined with a high rear diff ratio maks it spin fast on the highway.
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Old 10-28-2005, 08:59 PM
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According to test reports, the 2.6L should be around 2750 rpm at 60 mph.
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Old 10-28-2005, 10:34 PM
Ali Al-Chalabi's Avatar
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If its supposed to be 2750 at 60 mph, then it should be 3200 at 70 mph.

If you do a google search, you can find some programs where you can put in the tire size, gear ratio, and diff ratio to get the proper rpm-speed relationship.

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