
The primary colour of the car is applied on the bodywork and the interior stitching, while the secondary colour is applied on the rear stock spoiler. However, it bears the manufacturer emblem on the horn cap. The interior of the car is shared with the X80 Proto, using the same details and dial cluster. The underside of the car is mostly carbon plated, leaving the axle sections and part of the engine bay exposed. The vehicle comes standard with twin central exhausts, which can be modified to have a single exhaust or triple exhausts. A trapezium-shaped meshed vent is seen below the carbon-fibre strip, as well as C-shaped tail lights above it, consisting of dual red strips and a small white light. The rear of the car is mostly simplistic in comparison to the Entity XF, with CFRP elements on the middle section and diffuser. Behind the C-shaped section's seats are two large CF intake bulges that sit in an elevated area of the rear, with a large glass pane between these.

The main section of the car's greenhouse is more or less identical to the XF's it features a bold C-shaped arrangement for its windscreen, side windows and roof, being slightly more inclined and narrower. The body then curves until a flat, horizontal section of the body is reached, upon which aerodynamic wing mirrors are mounted on the doors. Behind the lower impression, the body features a CF body accent bearing silver lettering displaying the car's name, similar to the XF model. The sides of the car are dominated by the presence of dual impressions that allow airflow to the main engine air ducts and exit from the front brakes. The wheelbase features a CFRP skirt at its base, with a protruding lip that slightly juts out of the car. The sides of the XXR are more aerodynamic in comparison to the XF in terms of styling. The second level of impression is contoured to the side boundaries of the dual sections, reaching to the area next to the headlight units.

The car's bonnet/hood features two levels of impression, the first creating dual sections that run from the area ahead of the windscreen's base to the central area of the bonnet/hood, almost reaching the front end and aligned with the central intake. Around the upper area, the headlight units are placed in a more parallel positioning relative to the car, featuring dual inner lamps over a circular section and small turn signals on the upper edges, with plastic details around them. Like the XF equivalent, the car features discreet ducts on the sides of the front bumper. The front bumper is more slanted, featuring a large CFRP splitter at its base and three inset front ducts, the central one spanning two-thirds of the car's width.

The Entity XXR shares a similar profile to the Entity XF, but assumes a more aggressive styling. The Entity XXR is primarily based on the Koenigsegg One:1, with influences from the Koenigsegg Agera R.
