Purchase advice Volvo V70 AWD/FW D3/D5

Hello dear Elche friends! I swung. Mostly in the morning after getting up 🙂 And now between a Volvo purchase or foreign factory. I drove two Volvos test today: a V70 D3 from 2015 and a V70D5 from 2011. Kilometerwise the two V70s have run under 150 tkm: D3 currently 90 tkm, the D5 138 tkm. The D3 is the four-cylinder with 150 hp. The D5 is the 2.5 liter with 215 hp. From the profile the older D5 is more in question, since this is an AWD model and 200 kg more pull. a total of 2000 kilos. Since I pull a heavy horse trailer at least every two months, traction goes above all else. In addition, the 200 kilos more provide for a little more reserves. Basic question: I have already read a lot about problems with the D3/D5 engines. Sometimes it is a creeping coolant loss, sometimes there are problems with the AWD drive. Both vehicles have been groomed (Volvo), the older vehicle even gets a 1-year warranty. The “new” V olvo” is only a guarantee from the dealer. Are both not Volvo dealers! Can the D5 AWD be bought without hesitation or should one rather refrain from it. The price difference is the two 4000 Euro. Or bite into the sour apple and take a star (T-model E,Class CDI 220)? Thanks and greetings, Heide