A new spy video provides a much better look at Subaru's development on the next generation of the Levorg estate. We still believe that the differences are mostly under the skin of this test mule because the exterior looks so much like the existing model.

Gallery: Subaru Levorg Spy Video

While this car is running around the Nürburgring, the test driver clearly isn't trying to set a new lap record around the circuit. Levorg buyers aren't looking for all-out speed, though. As long as the estate offers a reasonable amount of performance, buyers should be satisfied with the vehicle's utility, though.

Underneath the familiar sheet metal, this Levorg test mule likely moves to the Subaru Global Platform like many of the brand's other modern models, including the Impreza, Crosstrek, and Ascent. The new underpinnings would allow Subaru to tweak the estate's dimensions to allow even more interior room. 

Powertrain changes for the Levorg are also a mystery. The current model is only available with a 1.6-litre turbocharged flat-four-cylinder engine in the UK. One possibility is for the company to add cylinder deactivation to its powerplants, which would boost fuel economy. Don't expect to Subaru to give up using CVTs anytime soon, either. 

The existing Levorg is getting old after going on sale in Japan in 2014 and arriving in Europe a year later. Subaru's development of the new Levorg still appears to be in the very early stages so don't expect the production model to arrive until well after 2020.