For Only the X6 M comes close to the 50i's 402bhp. Acceleration is brutal when you want it to be, but it's just as happy cruising quietly.
Against Compared with most quick petrol 4x4s, the 50i is reasonably economical. However, one of the diesel models makes a cleaner, less expensive choice, and will travel farther on a tankful.
If you want a high-performance 4x4 and only need four seats, look no further. However, the superior economy and emissions of the diesel models make them smarter buys.
Any X6 demands certain compromises. There are just the four seats, and the boot is small, for example. If that doesn’t put you off, though, there’s a lot to enjoy.
For starters, there’s no such thing as a slow X6. Even the smallest diesel, the 30d, shifts with real vigour, although it can sound a little gruff when really pushed.
Stepping up to the 40d means more of the same, only more so, with only a slight penalty at the pumps. You’ll be stopping to fill up rather more often in either of the petrols. The 35i strikes the more sensible balance between performance, price and economy, but the 50i is savagely quick but expensive.
There’s only one trim level across all models, and it’s well equipped as standard. The worthwhile BMW Service Inclusive package covers servicing costs for five years/60,000 miles for a one-off payment. It’s transferable to future owners which helps keep resale values healthy.
A toss up between the Mercedes ML and the BMW X6 was finally swayed by the recent addition of the third seat in the rear, my son is six foot three and…