XC90 Ocean Race D5 – Question about offer and DPF

Hello everyone. I drove an S80 until 2009 and rather by chance saw a nice XC90 at a dealer who jumped right into my eye. What do you think about this offer: XC90 D5 Ocean Race, 185PS, hand switch, Blaumet., Xenon, PDC, telephone, e. seats, driver seat with memory, cruisemat, disks darkened at the rear, level control, 5 seaters, etc. EZ: 08/2008, approx. 57.000km, 1. Hd., checkbook, makes a very well-kept – almost new impression. It should cost including new TÜV and 1 year warranty 28,000.-€. At the moment I drive a Zafira petroler, because I had serious problems with a passat with DPF. Actually I don’t want any more diesel, but the Xruck90 as a petroler will probably be a bit more expensive in maintenance. My question is now how it looks at the D5(185PS) on a long view, if you drive only country road? I have a duty of approx. 25km.