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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 04-24-2016, 02:00 PM   #1
mikeyd2016
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underpowerd???

so today I had a bit of fun with my friend and his bmw 318d, mine is a 2001 bmw 320ci auto coupe and his is the 2007 bmw 318d saloon, we were on a private road and decided to see whos was faster and yep you guessed it his was so much quicker we went from stand still all the way and he just left me from the off by the time I hit 3rd gear he was at least 10 car lengths ahead and just kept pulling away, this just doesn't seen right to me although the diesel has more torque low down I really didn't expect this at all, also mine is the 170bhp version not the 150bhp. my engine seems to be running well, no smoke, knocks, bangs, its just had the gear box rebuilt and seems to change fine, is this car really this slow or is there something wrong?
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Old 04-24-2016, 02:20 PM   #2
hitbyastick
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Might be those diesels are just too torquey & the transmissions have tall gearing which makes them pull ahead quicker once they get going. I don't know, I've never driven an e46 diesel. He can't have left you from a stop though. That's impossible! If so he has a great running car it sounds like.

You might could use a thorough once over with regard to vacuum fittings & such, general tuneup items, etc. Compression test to see how tired the engine is. However the engines do well with what they have, they are not drag cars by any means. Remember the 2005 Benz e320 diesel ran off & left a Corvette in that well known commercial so who knows. Modern diesels will surprise you.

edit: wasn't with a corvette, it was with a riced out japanese car of some sort. so not as impressive.
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Old 04-24-2016, 05:10 PM   #3
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Originally Posted by hitbyastick View Post
Might be those diesels are just too torquey & the transmissions have tall gearing which makes them pull ahead quicker once they get going. I don't know, I've never driven an e46 diesel. He can't have left you from a stop though. That's impossible! If so he has a great running car it sounds like.

You might could use a thorough once over with regard to vacuum fittings & such, general tuneup items, etc. Compression test to see how tired the engine is. However the engines do well with what they have, they are not drag cars by any means. Remember the 2005 Benz e320 diesel ran off & left a Corvette in that well known commercial so who knows. Modern diesels will surprise you.

Diesel has the advantage from a dig, but they lose power on the high end.
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Old 04-24-2016, 06:47 PM   #4
jmo69
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Audi won Le Mans with a diesel, if his has an auto it might help keep the engine in boost if the rpms don't drop much between gears.
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Old 04-24-2016, 07:17 PM   #5
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Audi won Le Mans with a diesel, if his has an auto it might help keep the engine in boost if the rpms don't drop much between gears.

Why would rpms drop between gears in a manual?
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