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N55 twin turbo 35i

Discuss your latest mods or ideas, and anything to do with the BMW X5 (E70).
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sapphireblack
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N55 twin turbo 35i

Post by sapphireblack » Mon Nov 24, 2025 9:06 pm

Anyone here own a vehicle with that motor in it?

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X5Sport
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N55 twin turbo 35i

Post by X5Sport » Mon Nov 24, 2025 9:29 pm

Not had one, but this might be of use?

https://www.bmwblog.com/2023/12/12/bmw- ... liability/

I’ve got a feeling that Raj (not seen for a while) had a 335i that probably had that power unit.

In ‘X’ cars they’re probably rare as most sales were diesel in the UK.
:ant: Never anthropomorphise computers. They hate that.

sapphireblack
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N55 twin turbo 35i

Post by sapphireblack » Tue Nov 25, 2025 11:31 am

Raj went awol a while ago now which is a shame.

I've stumbled onto an E70 with this motor, lowish miles decent spec and white! A great colour for the advancing possibility of a full-time life in Greece 🤞 Got to own a car for a minimum of six months before it can be imported, so relevant to me now. Sure the mpg wont be startling either way but Greece prefers petrol despite deisel is more common.

I wonder whether its a viable N series?

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N55 twin turbo 35i

Post by X5Sport » Tue Nov 25, 2025 4:09 pm

It’s basically the petrol version of the N57 from diesel cars. The N57 is known for timing chain issues but not much else. The Blog I linked to has the gotchas, so as long as it’s properly serviced and has the right oils etc, should be fine. I would also expect it being an ‘N’ series, to have the 8-speed auto fitted. I’ve never seen a manual E70. That should have oil/filter changed every 8 years or 60k miles. Those boxes either fail immediately (as in within a year) or keep going.
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