If you encountered any of the following problems after 0.13 update: turbocharged cars don't work a lot of official cars throw fatal vehicle exceptions most mods are broken Automation exports don't work you are not alone. A lot of users have encountered them as well, and that's why I made this thread. Here's the solution - delete the More Engines pack for Covet. It conflicts with all turbocharged cars, causing them to break.
There also the usual 'features' mod to not forget about. In general, it's always recommended to disable all mods to make sure where an issue is coming from.