I cant export car to the BeamNG

Everything is ready. I made the car and engine. But export to BeamNG button is not working. It says “Complete the car & engine to export.”

you have zero reliability and therefore the engine doesn’t work

but the engine works on test menu. and im new. how can i increase realiability?

Can we see the engine stats and stresses?

There’s a red compressor surge warning, so the turbo goes kaboom. Make it larger so it spools later and it might be all ok.

An undersized turbo compressor and/or turbine will not generate enough airflow for the engine to work properly. The exact minimum size required to avoid this depends on a whole lot of variables (such as boost pressure, AR ratio, and number of turbos), so experiment with turbo settings to find out where the safe lower limit is.