Testing is taking place at tyre manufacturer Pirelli's Flurheden proving ground as part of the two brands' ongoing partnership.
Aston Martin chief engineer Matt Becker said: "Testing these prototypes in cold climate conditions helps us to assess the car’s early dynamics and, crucially, ensure confidence-inspiring sure-footedness on low-grip surfaces.
"This car propels Aston Martin into a new segment and our engineering team are enjoying the challenges of developing a quality luxury SUV experience through this robust testing schedule. Progress is on track and I am confident that we will deliver over and above what our customers would expect from an Aston Martin SUV."
The DBX is the first Aston Martin to go through a new dedicated test programme, to ensure it can produce the kind of dynamic on-road performance on which Aston has always made its name, allied to some credibility off road. Testing is also due to take place in the deserts of the Middle East, on German autobahns and at the Nürburgring.
The DBX was recently seen on UK roads testing the brand's AMG-sourced twin-turbocharged 4.0-litre V8, which is expected to be the first engine offered in the SUV when it arrives before the end of the year. Expect a similar power output to the DB11's 503bhp.