Will a 2015 Nissan Qashqai 1.6 dCi be suitable for muddy terrain and long commutes?

I want to trade in my 2011 diesel Nissan X-Trail 2.2 for a slightly smaller 4WD. I commute 50 miles a day, but need a 4WD for rough farm tracks. I have a budget of about £20,000 - £25,000 after trading...

What car would be the most responsive over rough, mountainous terrain?

I wish to buy a family car with an automatic gearbox and I don't want an extra large car for various reasons. I don't do huge mileage, about 10,000 to 15,000 kilometres of mountainous and motorway roads....