Character mistake: Tej mentions that the BMWs they used were factory-line, ie. unmodified. Hobbs then says that they were twin-turbo V8s "spitting out 560 ponies". The BMW M5s they have are E60 models (2005-2010) powered by a naturally aspirated 5.0 liter V10, producing 507 horsepower.
Character mistake: Brian compares Shaw's cars to "something you'd hear at Le Mans, a turbo diesel." However, a turbo-diesel is simply a turbocharged diesel engine, fairly popular (and common) in Europe like its non-charged counterpart, due to much better gas mileage and lower price of diesel fuel. On the other hand, WEC (World endurance championship, under which Le Mans 24 belongs) allows lot of variability in engine design. TDI engine was only used by Audi teams and for a short time, by Peugeot. Others used petrol turbo or NA engines.