Every 1:18 "Motorsport" series, having " With Sealed Body Shell " logo on it box, raised a lot of question among the collectors on why AUTOART are making die cast model cars with no engine, no opening of doors and bonnets but still demanding the same selling price.
BMW M3 GTR
This is because, many top racing teams, such as Formula One, WRC and Super GT racing cars, would not allow picture to be taken or conducting any research of the car’s interior by model makers due to the team’s unique design of their suspension setup and engine arrangement which are their closely guarded secret among their competitors.
Aston Martin DBR9 Sebring 2005
Because of this, there are no modern Formula One die cast models that are made with engine, even if they do, it is being made with assumption from limited sourcing of pictures of the press and magazine. The dimension will never be accurate and many small details are also incorrectly replicated.
Cadillac CTS-V SCCA World Challenge 2004
This is the primary reason for the introduction of "Motorsport" series offering modern racing model cars with no engine and opening and emphasizing the exterior features rather than the interior. It is meaningless to replicate an incorrect engine in a model just for the sake that the model should have an engine. For model collectors, the most important thing for a die cast model car is to have the body shape replicated as closely as possible to the real car. Interior, such as engine and boot, is secondary.