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Old 02-11-2011, 11:02 AM
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Quote:
Originally Posted by JCL View Post
FSETH's graph certainly shows some good numbers for the comparison. I tend not to use US government figures, because they aren't close to reality, and there are so many correction factors that I think the tests are not reproducable. I use either Transport Canada, or the UK government figures. Going with the UK figures, because they are listed conveniently on www.bmw.co.uk, the 335d has a 0-62 mph time of 6.0. The 335i is at 5.6, the 325 is at 6.7, and the 330 (when it was listed) was down the middle of those, same as the 328, very close to the 335d. Yes, it is only one aspect of performance. The mileage of the 335d on the combined cycle is listed as 42.2 mpg (remember that is Imperial gallons). The 335i is at 34 mpg, the 325 is at 39 mpg, and the 323 (when it was listed) was at 42. The 320i is listed at 44. My analogy therefore wasn't correct. It should have been the mileage of the 323, the acceleration of the 328/330, and the cost of the 335i. I will further grant you that in the US, you got rebates so that the 35d didn't cost that much. The rest of us don't get those rebates.

I don't have a concern over running my BMW gasoline engines to redline most times I drive them, after they are properly warmed up. It has not resulted in increased oil consumption or engine wear. If you read posts by wallyx5, he discusses his 300,000 mile 3.0 X5 that he regularly runs at high speeds. These engines do much better with that use than they do on short trips and at idle.

If your 35d works for you, that is fantastic. They are great engines. My only comment would be that if you like to take advantage of the low speed torque, and keep engine rpms down, and always have throttle response available, then that is not so much a diesel characteristic as it is a turbocharged engine characteristic. Your diesel just happens to be a turbocharged design. My 535i has the same characteristics, but with the added bonus that I can rev it if I want to. It has a six speed manual, and I can pretty much shift it 1-3-5 or 2-4-6, it has far more gears than it needs in daily driving, given the available torque just off idle.

I will grant you that when I bought the X, the rebates and tax incentives brought the true price down to ~1,000 less than the 3.0 models. That decision was a no-brainer. I would think a little harder about that purchase now with the 35i models closing the performance gap. I'm not so much a diesel fan as I am a fan of getting the most power for the buck.
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