If there exists something of a mismatch between the predatory aesthetics of the Q8 and this demure diesel powertrain, such is the car’s rolling refinement that for a large proportion of customers it simply won’t matter. With the benefit of optional double-glazed windows (negated in part by the echo-chamber tyres attached to vast 22in wheels, also optional), our test car’s cabin was only slightly more noisy at a 70mph cruise than that of a Mercedes-Benz S-Class.
Along with the conspicuously perched seating position and opulent cabin, the effect is profoundly becalming. When the 3.0-litre V6 finally makes itself heard – an event that only really occurs above 3000rpm – it does so with a remoteness found only in very large cars.
The cruising credentials of the Q8 are further established by a touring economy of a shade over 40mpg and a standard 75-litre fuel tank, giving a potential range of 660 miles between stops. Along the way you’ll find the engine shutting off entirely should you coast in a window between 30 and 100mph, with the 48V mild-hybrid system at other times recuperating energy through the brakes.
Incidentally, those brakes are excellent, should you ever need to exercise them fully. Full-bore stops from 70mph are over sooner than even Porsche’s latest Cayenne Turbo can manage, despite that car having 10-piston front calipers.