Not an owner report, but I had the joy of hiring a large "premium" SUV in Canada for the last two weeks. After arguing with Avis who tried to give us a car with no boot (we were 6 adults with 6 suitcases and hand luggage ) we finally got the GMC Yukon XL. And bloody hell is it BIG.
On the outside.
It's 5.72m long, 2.05m wide and 1.94m high with 10 inches of ground clearance. So that's the best part of a meter longer than a Vauxhall Vivaro which can seat 8 people
and get all their suitcases in the boot. Same number of seats but half the usable luggage space. Picture is an example, not our hire car which was white.
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We had 6 adults so 2 in front, two in the middle and two in the third row. The boot was big enough for 5 normal suitcases. The 6th had to be wedged between the middle row seats (hire companies all seem to go for the two seat option in the second row) and the hand luggage tucked in every which way.
Tech wise, it was frankly better than my ID4. Carplay worked seamlessly, there are cameras everywhere for parking (which you need as it's like parking a tank and front visibility is terrible). The front seats not only had heating but also cooling. It had adaptive cruise control and bose speakers everywhere. So a good trim. Interestingly although it showed lane keeping it didn't actually do it - just vibrated the appropriate buttock if you crossed a line. A bit weird to go for buttock buzzing rather than steering wheel but there you go...
Driving wise, it was comfortable but like driving a boat - wallowing on the corners and generally feeling unstable. Very little connection with the driving. It has a fair amount of oomph in the V8 5.3l engine and it took a while to get used to the Canadian attitude to speed limits. It was fairly new but had a disconcerting clunk in the steering column when you went over a bump or railroad.
We did just over 1200 miles in two weeks, so it served us well but I wouldn't buy one.