They were present more for ride and handling comparisons than simple performance figures, but the digits that emerged are significant enough.
In the benchmark 0-60mph sprint, the Audi and Mercedes nudged close to each other. The GLC just dipped under eight seconds, the Audi just over. At this point, you can forget the Land Rover, which is more than a second slower than the Audi.
Over a standing quarter mile it’s a similar story: the Mercedes is still narrowly the more accelerative, plus it has the edge on in-gear flexibility, which is what really matters. Onto a level slip road it will accelerate from 30-70mph in 7.8sec, while the Audi wants 8.5sec.
The Audi’s gearing is a little unusual, being considerably lower than the Mercedes in the first five gears, then about equal in sixth and far longer in seventh.
You’d think there were big gaps in the upper gears (well, there are), but such is the S tronic gearbox’s ability to shuffle between ratios that it’s not something you’d notice unless you chose to pay it significant attention.