It's a pity you didn't research more before buying as there are some areas to check. Good news is it's last of the breed & low mileage. Hopefully you've got a warranty, so do a search on here for VCU, IRD, search tippex test. Listen for drivetrain clonks & whines etc. MAF sensors fail causing a gutless feeling below 2000rpm. Cam sensors fail causing hot starting problems. Crank sensors can fail causing non starting/reluctant starting. Injectors which are expensive fail causing very difficult starting & uneven running. Lift pumps fail causing poor/non starting/running. Front lower wishbone balljoints fail causing a clonking sound over bumps. Front anti-rollbar tie rod balljoints fail causing chattering over rough surfaces. Electrics can give problems as can warning lights - search for 3 amigos. Intercooler hoses split regularly after 5 years giving black smoke & poor performance sometimes with whistling noises. Turbo variable vane vacuum solenoid can fail causing poor performance mainly at around 70mph. EGR is a known piece of crap & is best sorted by fitting a bypass, but you can clean them if you're determined to keep it. Replace the crankcase breather filter/valve assembly as soon as you get the car as it blocks, pressurising the crankcase & forcing the oil out of every seal including the turbo which has killed off many turbos - symptoms include poor performance, excess black smoke & oil being forced out the dipstick when you check your oil level. Change your fuel filter too as the service interval at 60,000 miles is way too long for any car. Oil can mix with coolant but is usually down to a faulty oil cooler rather than head gasket. The locking recess where the jack is kept in the boot floor can flood out due to failure of the rear door seal. The rear door has a complicated mechanism which has to lower the rear window an inch or so before the latch springs to release the door which can fail. Electric window carrier cables are weak & can snap though people on here have bought repair kits off ebay & fitted bicycle brake wires etc. with reasonable success. Starter motor solenoids can be troublesome & there are repair kits. Injector wiring looms can fail causing poor running/starting & again there is an uprated loom available from the dealer.
These are an idea of the possible known faults & it's equally possible to buy a car & have no trouble at all so don't worry about them till you have to. Just give your car a thorough check when you get it & service it regularly & properly.