I’ve had my RS almost a month now and I am also experiencing this awful problem of the car veering all over the place at around 5000rpm in 3 and 4th gear. It’s border line dangerous and ford need to recall all that have been released and get it sorted pronto.
Sorry to hear of your trouble but this seems to be a common issue. Suppose you have tried looking at wheel alignment, tyre pressures etc to rule that out? Have you been on to your dealer?
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