Ever since the Jaguar F-Pace arrived back in 2016, it has quickly become the brand's best-selling model. Now in its fourth model year, the F-Pace is ready for its first major update. We first spotted a camouflaged F-Pace towards the end of last year, hiding what will likely be a series of small exterior changes and some updates to the interior.

Now the updated F-Pace, which is expected to arrive as a 2021 model, has been spotted again this time undergoing winter testing. This test mule is still heavily camouflaged but some of the exterior changes we mentioned are starting to come into focus.

Whereas the last test mule featured the same headlights as the current F-Pace, this latest example clearly features an updated light shape. There will also be a new grille shape and an updated front bumper design to go along with the headlight change. At the back, the taillights will also see a slight redesign coupled with a new rear bumper design. As for the exhaust, the pipes seen here do not look production-ready but they do indicate that the 2021 model may use a different design than the current F-Pace.

Inside, the interior was completely covered up so our spy photographers weren't able to capture any of the changes. We expect Jaguar to make updates to the infotainment system, possibly adopting the dual touchscreen setup seen on the I-Pace and several Land Rover models.

The biggest mystery lies under the hood. At this stage, it's unclear whether the F-Pace will keep its turbocharged four-cylinder, supercharged six-cylinder, and supercharged eight-cylinder engine options. Jaguar and Land Rover have been making rapid changes to their engine offerings with new mild- and plug-in hybrid drivetrains and straight-six engines. We wouldn't be shocked if the F-Pace's V6 is dropped for the JLR's new inline-six.