Jaguar had intended to make the XF largely from aluminium, like the larger X350 XJ model. However, time and cost meant steel is used for the monocoque structure and most of the body panels. The bonnet is made of aluminium, so it resists corrosion well, but give it a good once-over for stone chips.
The XFR is distinguished by its unique bumpers and the front has lower, larger air intakes. The bonnet has bespoke louvres and grilles, which could be upgraded with chrome trims that are not to everyone's liking. Down the sides are sill extensions and at the back is a discreet boot spoiler. There are also four exhaust tailpipes and most XFRs have the diffuser set into the lower part of the bumper. The XFR-S comes with this finished in gloss black and a larger rear wing.
There's very little to worry about with the XFR's bodywork other than making the usual checks for accident damage and poor quality paint repairs. The only place to look for rust is on the boot around the chrome trim, which is common to all XF models of this generation.
The fuel filler flap can jam shut and need to be teased out, but regreasing the hinges will solve this.
PHer's view:
"The XFR is subtle almost to the point of being too easy to miss, but it does mean you don't get the chavs in hot hatches trying to race. It also means I'm happy leaving it parked on the street as it just doesn't get a negative reaction."
Jimmy Millar