For a while, the Sunburst 1.8 CVT was pretty problematic in BeamNG. It did not behave anything like an economy CVT at all (i.e. it would never drop RPMs fast enough with low throttle, S mode didn't work, and fuel economy wasn't where it should be either). I tested it again after some updates and now the Sunburst's CVT behaves VERY similarly to how the CVT in my real life car does (a 2014 Honda Civic). The S mode even engine brakes just like it does in my Civic, and at similar RPMs. Anyone who thinks Beam isn't making progress needs to look a little closer, because it really is.