If you’re looking for a low-emission SUV then stay away from the Mercedes-Benz GLS – neither of the two engine options are capable of delivering sub-200g/km of CO2, even with a standard stop-start system.

Best of the pair – still with a heady figure of 203g/km of CO2 – is the GLS 350 d with its 3.0-litre diesel engine.

At the opposite end of the scale, churning out 288g/km of CO2, the V8-propelled Mercedes-AMG GLS 63.

Despite its expertise in plug-in hybrid and fully electric drivetrains, the GLS is not available with such a system to reduce CO2 emissions. If that’s a prerequisite then you’ll have to consider the smaller Mercedes-Benz GLE which is available in plug-in guise.

There isn’t a lot to complain about in terms of the Mercedes-Benz GLS’s reliability. While it’s rammed with electronic systems and features, it’s a robustly built machine and feels of a very high quality – as you’d expect from a car at this price point.

The engines and transmissions see service elsewhere in the Mercedes range, so longevity shouldn’t be an issue there either.

So far there’s been only one official recall concerning GLS models (as well as the E-Class and GLE) built between August 2015 and July 2016 relating to a power steering defection. All of those affected models should now have been remedied.