The Porsche Panamera has been on the market for a few years so the automaker is working on a minor facelift for its powerful five-door sport sedan. Image galleryThe prototypes snapped on the Nurburgring were undisguised and show a revised nose, new headlights and re-designed tail lights. There are also two different daylight-running light layouts and the different grilles. This means there will probably be the standard Panamera while the other will be the “S” variant.Engine options will likely carry over but there could be some minor changes for improved performance and increased efficiency. Lots more Wheels24 spy shots.