AutoExpress compares the running costs of the GLE Coupe vs the X6:
Not only is the GLE Coupe more expensive to buy than the BMW X6, it’s also less powerful and not as efficient if you opt for the entry-level versions.
The 350d returns 39.2mpg combined on paper with 187g/km CO2, which is some way down on the 47.1mpg and 157g/km CO2 of the X6 xDrive30d.
Things get worse from here as the GLE 450 returns 31.7mpg and 209g/km CO2, and as you’d expect from an AMG with a huge V8 engine, the 63 S returns best figures of 23.7mpg and 278g/km CO2, meaning it’ll be costly to run.