The interior of the Toyota GR86 features a driver-focused cockpit with sporty accents and advanced technology. The front seats are sports seats that provide good support during spirited driving, and the driver's seat is adjustable for height and tilt. The steering wheel is leather-wrapped and includes audio and cruise control buttons. The GR86 also includes a digital instrument cluster and an 8-inch infotainment system with Apple CarPlay and Android Auto compatibility. The interior features also include automatic climate control, keyless entry, and push-button start. The GR86 GR version includes additional features such as Alcantara-trimmed sport seats and a leather-wrapped steering wheel with red stitching.

The Toyota GR86 has a sleek and sporty body design with a low-slung profile and sculpted lines. It features a long hood, short overhangs, and a roofline that slopes down towards the rear. The front end features a bold, black mesh grille with a Toyota emblem at the centre, and sharp LED headlights with daytime running lights. The rear end features a low bumper, dual exhaust tips, and LED taillights. The GR86 also includes a functional aerodynamic design, with air ducts and vents that help to improve cooling and reduce drag. The GR86 GR version includes additional exterior features such as a front splitter, rear diffuser, and unique 18-inch wheels.

The Toyota GR86 is equipped with tires that vary based on the trim level and market. In North America, the GR86 is equipped with Michelin Primacy HP tires, with size 215/45R17 on the base model and 215/40R18 on the GR86 GR version. In Japan, the GR86 comes with Bridgestone Potenza RE004 tires in size 215/45R17. Other markets may have different tire options, but they are typically high-performance tires that provide good grip and handling for the sporty driving experience.