Purchase advice Jaguar XF

Good evening, I’m a complete newcomer to Jaguar My new job requires a lot of flexibility, which means that I’m going to sneak around 40,000km every year on the mileage indicator. Since I don’t really want to go through so long on the highway with my old polo, I’m looking for a new car. Among other things, I met in my research on the Jaguar XF 3.0 network and I thought: Finally, a simple, elegant car without a strange detour. After all the very good feedback and tests in this forum, as well as in various articles, I am now in serious temptation to buy this car as a used car from 2010. My question now is: Which XF 3.0 should I take? The one with 211 hp, 240 hp or 271 hp? I am not a raser, more than 160 km/h you can not manage in normal running traffic anyway. I still want to be able to overtake quickly and If it is possible to drive over the motorway for a time with 200+ without loud engine noises and all too high consumption. The car probably has around 50,000km (BJ 2010/11) on the clock so far, how long will it take then until the first correct problems occur, provided the car is top in shot when purchased? My alternatives to this car would be so far the Audi A5 and the BMW 530d.