You’re right, a lot of the cars around this period did start to introduce mechanical fuel injection around this time, but it was still often only found on the higher end trim levels.
The Audi 80 1.6CL that I used as an example uses a EA827 1588cc engine that was offered with K-Jetronic, but only on the Golf and Scirocco GTI models that also used it.
The Citroën BX, let’s take it’s 1.6 for comparison as 1.6 sits right in the mid range of the allowed displacement. was also offered with Fuel injection, but only on the 16 TRi trim and not on the cheaper 16 TRS trim.
The Carina and the BMW E21, Carbed as well.
I will go in-game for a bit and do some testing with Mechanical Fuel Injection. I may raise the allowed PU for the engine slightly, but not a lot.
Yes that’s right in the middle of what is allowed, I’ve given a bit of flexibility in the wheelbases so that a lot more bodies can be used, it doesn’t have to be a textbook definition of a D-segment car, if you enter a very large C-segment or a very small E-segment car that fit within the budget of the challenge, then those will be accepted as well.
As for 6-Cylinders, I’m afraid that’s a bit outside of the scope for what is to be expected in this price range. You’ll either have to sacrifice quality or cylinders.