As per Marv's suggestion I decided to post this bug I found.
When trying to calculate car stats of one of my new cars (Bendor - http://revoltzone.net/cars/28150/Bendor), the car simply wouldn't start.
After a bit of investigation Marv figured that in order for the car to start, it must be refreshed with Ctrl + R.
Not really a big issue, but just thought I should point it out.
Report issues and bugs here.