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Old 09-07-2017, 08:31 AM
Join Date: Aug 2008
Location: Athens Greece
Posts: 6
rikos is on a distinguished road
M50D or 40D

Hi everyone.

I need some advice!

I'm going to change my 2008 X5 3.0SD after 260.000km and I'm between M50D and 40D. I really loved it but it's time for an update!
My mechanic told me that M50D has engine problems due to too much power and suggests 40D and add an chip program to get more power!!
I figured that if it's made by Motosport the M50D would be better and most probably it will have bigger brakes and stronger gearbox.
What should I choose?

Thanks in advance!
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Old 04-25-2018, 04:59 AM
Join Date: Sep 2006
Location: Sierck Les Bains
Posts: 127
Eric Le Baron is on a distinguished road
I did a test drive with a 50D but found it a bit noisier than the 40D.
68HP less is no issue for me.
I've spent the price difference on options!
Most of the time I drive long distance.
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Old 11-24-2018, 01:07 PM
Mentat's Avatar
Join Date: Dec 2005
Location: Romania
Posts: 71
Mentat is on a distinguished road
As an owner of an m50d, I've had the possibility to also drive 40d, I can say to you... go for 40d.

m50d is nice on paper, but it comes with a lot less fuel economy and a very big price difference.
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Old 02-09-2019, 05:57 PM
Join Date: Apr 2005
Location: England
Posts: 66
Moments is on a distinguished road
I just bought a used 40d. The spec was too good for a low mileage car, it’s fully loaded.

Having driven a few F15 examples, and ragged a 40d through woodlands at Goodwood, this was a sure bet. It will be hard to leave my E53 but that should get a good buyer. The F15 was too good to pass.
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m50d or 40d

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