In non-hybrid form the Escalade’s mighty V8 puts out a hefty 409bhp and 415lb ft of torque. It also returns just 19.5mpg on the combined cycle while contributing 339g/km of CO2 to the atmosphere. In contrast, the price for a cleaner, greener conscience is that the petrol-electric hybrid produces just 337bhp and 365lb ft, but claimed combined economy improves to 25.9mpg with CO2 emissions falling to 256g/km. Hardly Prius-rivalling figures. But like we’ve already said, these things are all relative.
The petrol-electric Escalade uses GM’s two-mode hybrid system, which mostly operates as a CVT but also has four fixed gears that are used when the Caddy’s a-haulin’. And given the vehicle’s 2.7 tonnes, it’s easy to see the sense of harnessing its kinetic energy when coasting and braking.
The electricity generated is stored in a 300-volt battery stored under the middle row of seats – the Escalade swallows it almost unnoticed – which propels it at low speeds. The Atkinson-cycle 332bhp 6.0-litre V8 has automatic stop-start, and can also operate on four cylinders to save fuel.
Inevitably, though, the Escalade is truck-like to drive in both low-speed manoeuvring and cornering, though for a vehicle almost as big as a house it gets around bends with less drama than you’d expect. This is a tall, ponderous-looking vehicle, and that’s how it feels on the road. The car’s titanic mass makes performance well below the order of the modern fast 4x4, too: the 2.6-tonne 6.2-litre standard model takes 6.7sec to crack 62mph, while the 2.8-tonne hybrid takes 8.4.
More disappointing than this is the near-ceaseless vibro-massage accorded to your lower legs in both cars - the consequence of riding on 22-inch wheels with 45-section tyres.
In the hybrid, it’s impossible to ignore the curious hums and whirrs of the multiple electric motors that not only propel the Cadillac but power the compressor, the brake pump and more, these especially evident when the V8 is switched off. But the worst refinement issue affects the brakes, whose transitions between regenerative and hydraulic retardation make it near impossible to bring the Escalade to a smooth stop.
The simpler 6.2-litre car is a little better mannered, but still entirely commercial-feeling from behind the wheel. Cadillac’s leather-derived luxury veneer is thin; in most ways and situations, the Escalade is a brutish, lumbering challenge to keep on the straight and narrow.