Maybach Exelero, 2005 The Maybach Exelero is a high-performance concept car designed and built by luxury marque Maybach. The 690 hp (SAE) (514 kW) two-seater with a bi-turbo V12 engine is a one-off design commissioned by Fulda Tyres. Fulda is using this Maybach as a reference vehicle to test a new generation of wide tyres. The German luxury car manufacturer created the one-off model as a