I can somewhat level with you on "where does it belong?"

As for discounting the diesel model? absolutely not, I have had the displeasure of driving the X1 1.8si (RWD gasoline 4cyl) and it was completely and utterly shit house, it would be awesome with the 20d mill! We had a E90 320d for some years and that thing pulled very well and was a pleasant drive so I would imagine similar performance for the X1 20d, I think the X1 20d S drive is probably the best model on offer here in Australia.

The top of the line X1 here is the 28i and it pretty much hits the X3 20D price point.

Back to where does it belong? Next your X5..

That is what we figured we will likely buy for my partner next seeing how we already have the X5 and she doesn't want a 'big' car.

They look great with M sports package.

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2006 E53 Kalahari Beige, X5 3.0d Sport [sold] | MY13 Audi A1 Ambition | 2004 911 GT3| W124 Estate