Übermacht is a German automotive company in GTA IV and GTA V. It is likely a parody of German automaker BMW, as its Oracle and Sentinel vehicles are derived from BMW designs, and the Rebla resembles a hybrid of the BMW X5 with the Porsche Cayenne). The term "übermacht" is German for "supremacy" or "superior". Much like Benefactor, the cars have modified versions, in reference to BMW's in-house tuning division, BMW M , however, much like Benefactor, most of the modifications are purely for show.
An Oracle ad parodying BMW's ad style is seen on billboards around the city, including one at Star Junction. It shows a picture of the car with the caption, "Automatic Arrogance". According to Time magazine, German luxury automakers were known to be "Teutonic and utilitaria" with dealers described as "arrogant". 
|Oracle||Sedan||2002-2008 BMW 7 Series|
|Rebla||Crossover SUV||1999-2006 BMW X5|
|Sentinel||Sports Coupe|| 2001-2006 BMW M3 (GTA IV)
2005 BMW 3-Series E93 (GTA V)