2025 Defender Octa debuts July 3 as a hardcore off-loader.

JLR is no stranger to rugged engine-powered SUVs, and next up will be a hardcore defender introducing the new Octa designation. Prototypes have been tested for over a year, and this week JLR confirmed a July 3 debut.

The Defender Octa will be available as a 2025 model and will not be easy to come by, at least for the first year. Like the Range Rover Sport SV announced last year, production of the Defender Octa will be limited to the first year and buyers will be selective. Interested parties will need to register for and possibly attend special preview events, which JLR plans to hold seven around the world, including here in the U.S.

JLR has not revealed the Defender Octa's specifications, though, it has stated that it will feature a twin-turbocharged V8 with a mild hybrid system and a new 6D Dynamics suspension. Both of these features are found in the Range Rover Sport SV, which produces 626 hp from a twin-turbocharged BMW 4.4-liter V-8.

The 6D Dynamics Suspension is a combination of hydraulically linked dampers, height-adjustable air springs, and pitch control that, according to JLR, keeps the vehicle in a nearly level position even during hard cornering or when driving over rough roads at speed According to JLR, the system can keep the vehicle in a nearly horizontal position even during hard cornering or when driving on rough roads at high speed. This system eliminates the need for conventional anti-roll bars.

The prototype has also been spotted with Brembo brakes, a titanium exhaust system, and 20-inch wheels with BFGoodrich all-terrain tires. All previous prototypes have been based on the Defender 110 body style.

Ongoing testing has spanned a variety of conditions, including race tracks, rally stages, rock crawls, and extreme weather. Some of these tests have taken place on the Nürburgring race track in Germany and on the rocky trails of Moab, Utah.

To add to those wondering about the name octa, it seems to refer to some sort of diamond shape in geometry known as an octahedron; JLR wants to convey that the Defender Octa embodies the resilience of the toughest natural substance on earth, the diamond. The JLR may be trying to convey that the Defender Octa embodies the resilience of the toughest natural substance on earth, the diamond. As seen in the teaser photo above, the diamond shape will serve as the logo for the Defender Octa.