Yes, I agree that there is nothing wrong with mild steel for an exhaust but Lexus are possibly misleading buyers. I have sent off an email to Lexus UK querying this point and will be interested to see if they reply and what it might be.
So, £4000 for a mild steel exhaust ? Even taking into account the relative small numbers of these cars sold, that figure is just a ***** take. There is no way on Gods earth that I would pay that. I reckon at the very worst a new system could be made by cutting off silencer boxes from another make exhaust and welding sections together to make a new system at a fraction of that cost.
I wonder if anyone on here has tried doing that ?