Need advice on buying a car

Hi guys, I'm a new member so I can't start a new topic, so I decided to ask this question here. Hope that it's ok. I want to buy a car via incacar.com/used/cars/land-rover/range-rover-sport/2011-Land-Rover-Range-Rover-Sport-597541 but I´m a bit worried about that, just if they are reliable. Is there someone who knows them, or bought a car from them? What do you think about that? Thanks for answers.