I don't think that's true at all. The early 1st gen cars had a weak diff, but the diffs in the V2s were pretty much bulletproof.I know a lot of these cars have problems with the rear differential.
"Wobbles in the rear"? Not sure what that means, but that sounds more like a tire / alignment issue or maybe some worn out bushings in the rear suspension.It says service differential sensor. Wobbles in the rear a little when I turn. Anybody had the same issue?