LFA's Nurburgring laptime is: 7:38
Hockenheim laptime: 1:11.0
Edit: Just found out from someone who has the magazine, SportAuto blamed the 150+ mph acceleration issue on the lack of a way to retract the spoiler as the downforce that the spoiler creates results in too much wind drag.
As it turns out, LFA's drag coefficient is only 0.34 when the spoiler is retracted. Once the spoiler raises automatically at 80 Km/h, it becomes a truck-like 0.40, which creates a lot of downforce.
Downforce is great for high speed stability and handling, but it results in too much wind drag over the rear wheels and makes the car too heavy resulting in acceleration loss at very high speeds.
They praised LFA's handling, balance and suspension. It had one of the fastest cornering speeds.
Putting things into context, this is how it looks like with the same driver and same track (Horst Von Saurma). There are no so-called manufacturer's claim here since it is not a comparison. All are dry laps:
Porsche Carrera GT: 7:33
Lexus LFA: 7:38
Corvette ZR-1: 7:38
Ferrari 458 Italia: 7:38
Nissan GTR: 7:38
SLS AMG: 7:40
Ferrari F430 Scuderia: 7:40
Porsche Turbo 997.2: 7:38
Porsche GT3 997.2: 7:40
Lamborghini LP670-4 Super veloce: 7:42
Corvette Z06 C6: 7:43
Maclaren Mercedes SLR: 7:42
Ferrari 599 GTB: 7:47
Ferrari F430: 7:55
Lamborghini Gallardo Superleggera (530 HP track lightweiht version): 7:47