It was about 2s a lap quicker than anything else! Bob Berridge was interviewed after the race and asked what it was like down through the Craners. The answer? "Scary!"
2 seconds quicker? Nah
Fastest race lap was a 1m00.701, only a tenth quicker than the Nissan.
Without the suspension issues that's the same sort of pace as we would have expected from the Spice.
Qualifying it did a 59.0, but again only 7 tenths quicker than a Spice (Albeit one with a big capacity american V8). In qualifying you would expect the car to potentially have an advantage over the non turbo cars as they can run full boost, which they may not be able to do all race.
What is incredible about the car is the power and torque it has, probably over 1000bhp. For comparison, the Spice has a Cosworth 3.5l DFR with ~600bhp. The difference in acceleration off the corners is massive. However, the 3.5litre cars are allowed to run 100kg lighter (800kg vs 900kg however in reality many of the 3.5l cars are more like 840kg) so the key to matching the Mercedes is carrying more speed through the corner!
In period of course, the C11 was pretty dominant. In historic group C, although it is no doubt still a very quick car, I think driven well, some of the other cars can still give it a run for it's money.
The C11 is for sale if you have somewhere between £1-2m handy