The best place to understand the 2026 Land Rover Defender 110 OCTA isn't on the highway—it's deep in the muddy hills, rocky climbs, and water crossings of England's Eastnor Castle Estate, where Land Rover has developed and tested its SUVs for more than six decades.I spent a day behind the wheel of the brand's most powerful Defender ever, tackling terrain that looked intimidating even before climbing into the driver's seat. The proving grounds were relentless, but the OCTA never seemed fazed. Whether crawling over boulders, threading through narrow woodland trails, or climbing steep, slippery grades, it delivered the kind of confidence that makes difficult obstacles feel surprisingly manageable.Named after the octahedral structure of a diamond—the toughest natural mineral on Earth—the Defender OCTA represents the strongest and most capable version of the iconic SUV yet.2026 Land Rover Defender 110 OCTACourtesy ImageVerdictThe 2026 Defender OCTA isn't just the quickest Defender ever—it's the most confidence-inspiring one I've driven. Eastnor's brutal terrain proved this SUV is far more than a high-horsepower special edition.Why It MattersMost powerful Defender ever with 626 horsepowerTested where Land Rover develops every DefenderCan wade through 39.3 inches of waterNew 6D Dynamics suspension smooths extreme terrainClearSight Ground View lets you "see" beneath the hood0–60 mph in just 3.8 secondsDriven on Eastnor Estate's legendary 60-mile off-road courseA Defender Built for ExtremesWhen Land Rover invited us, I knew upon arrival what to expect from the mighty Defender OCTA. Under the hood rests a 4.4-liter twin-turbo mild-hybrid V8 producing 626 horsepower and up to 553 lb-ft of torque. Switch into Dynamic Launch Mode and torque jumps to 590. That's enough for an explosive run of 0 to 60 in just 3.8 seconds. It is the most powerful engine offered in a Defender. AdvertisementAdvertisementOCTA's wheel arches have been widened by 2.7 inches to accommodate 33-inch tires; in this case, my vehicle was outfitted with 275/60 R20 BFGoodrich Trail Terrain T/A rubber to traverse through muddy water, over rocks, and up and down steep hills with the help of Intelligent All-Wheel Drive, a 6D Dynamics suspension, and OCTA Mode.The Defender 110 OCTA's wheel arches have been widened by 2.7 inches to accommodate 33-inch tires.Courtesy ImageOCTA's rear bumper is unique and quad exhausts have been reprofiled to enhance departure angles; the grille is larger and deeper to maximize airflow and feed the larger brake ducts for the bigger front brake discs, and underneath there's a revised aluminum alloy front underbody shield. As well, the new 20" rims are fully forged. The Eastnor Experience Center rests within 5,200 acres of stunning Herefordshire countryside and woodland on the private grounds of Eastnor Castle. For decades, this has been one of the proving grounds for Range Rover, Defender, and Discovery, where demanding terrain has shaped and confirmed the character of every vehicle that carries the respected name. Spend a full day immersed in uncompromising adventure, with Defender exactly where it belongs.Rocky ascents, deep ruts, and water wading became the classroom as my coach instructed me on advanced driving techniques. The OCTA can swim in 39.3 inches of liquid, thanks to a suspension that is raised by 2.95 inches. Trust me, Eastnor is the definitive route to experience Defender's durability along with its modern capability.More Than an Off-Road MachineFrom a product planning perspective, the new OCTA has been put through 600,000 miles of real-world punishment, from the dunes of the UAE to the Nürburgring in Germany to snow and ice in Sweden. But this SUV's abilities are not just for extreme activities.The Defender OCTA can swim in 39.3 inches of liquid, thanks to a suspension that is raised by 2.95 inches.Courtesy ImageOn a previous test drive with the rugged and resilient Defender 110 X-Dynamic around my hometown in Maryland, it enjoyed ventures to the trailhead for mountain biking. Swinging open the heavy tailgate, laying down the seats, and unloading my Specialized Stumpjumper MTB all came with ease.AdvertisementAdvertisementThe rugged interior, layered with a sturdy floorboard cover, handled the muddy return without complaint. To navigate forest-like surroundings, the Defender's solution is the 3D Surround Camera. And now the new Defender 110 offers a six seat configuration for increased comfort and access, featuring a set of second-row captain chairs. Technology That Earned My TrustWhen the terrain turns extreme, All-Terrain Progress Control and ClearSight Ground View step in as your co-pilots. Together, they take the stress out of holding a low crawl speed. At the same time, the touchscreen reveals exactly what's hidden directly in front of the vehicle during extreme conditions such as navigating around or over a boulder. Defender also offers Adaptive Off-Road Cruise Control, an evolution of All-Terrain Progress Control that lets the driver dial in a preferred comfort level before tackling rough ground. That means less time managing throttle and more time focused purely on steering. The result is a noticeably more composed off-road experience with far less driver fatigue. As the surface ripples beneath you, the system quietly adjusts speed on its own, keeping the ride smooth and unbothered no matter how unpredictable the terrain gets.The All-Terrain Progress Control in the OCTA quietly adjusts speed on its own, keeping the ride smooth and unbothered no matter how unpredictable the terrain gets.Courtesy ImageI didn't feel comfortable at first as I prefer to control the throttle. Still, I quickly learned to let go because the environment was deeply demanding, especially when slowly creeping through tunnel-like trails with banks as high as the hood and no room to open the doors if I had stopped.AdvertisementAdvertisementOCTA gives you three core drive modes: Comfort, Dynamic, and OCTA Mode. Dynamic Mode is built for the street for ultimate on-road performance. OCTA Mode is where things get serious. It maximizes wheel travel, enables Off-Road Launch Mode, and switches on Off-Road ABS for greater braking performance.During this particular demonstration, I felt like I was going to break some suspension components, but the Defender OPTA handled the assignment with confidence. Stopping power comes from Brembo 6-piston aluminum calipers, paired with the all-new suspension hardware. Beyond that, Terrain Response has settings to adapt to Sand, Mud and Ruts, Grass Gravel Snow, and Rock Crawl; basically, whatever the surface throws at you.Why Eastnor MattersLong before customers experience a Defender, it earns its reputation here. Nestled beneath the Malvern Hills, Eastnor Estate is more than a test facility. The working estate spans thousands of acres of farmland, woodland, and protected landscapes recognized for their ecological and geological significance. For decades, Land Rover engineers have used its unforgiving terrain to refine the vehicles that eventually reach showrooms around the world. For enthusiasts, visiting Eastnor offers something few destinations can: the chance to experience a Defender exactly where it was designed to excel.Final ThoughtsThe Defender OCTA is he most capable Defender I've driven—it's blisteringly quick on pavement, remarkably composed off-road, and packed with technology that enhances the experience.Courtesy ImageThe Defender OCTA is unquestionably the most capable Defender I've driven. It's blisteringly quick on pavement, remarkably composed off-road, and packed with technology that genuinely enhances the experience instead of distracting from it.AdvertisementAdvertisementMore importantly, a day at Eastnor proved this isn't simply a higher-horsepower Defender with cosmetic upgrades. It's a thoughtfully engineered flagship that lives up to its promise when the terrain gets serious.Whether you'll ever tackle trails this demanding is beside the point. Knowing the OCTA can makes every drive feel like the beginning of an adventure.2026 Defender OCTA SpecsEngine: 4.4-liter twin-turbo mild-hybrid V8Transmission: 8-speed automatic with Intelligent All-Wheel DriveHorsepower/Torque: 626 hp/553 lb-ft0–60 mph: 3.8 secondsTop Speed: 180 mphMPG: 16 city/21 highwayPrice: From $183,700This story was originally published by Men's Journal on Aug 4, 2026, where it first appeared in the Gear section. Add Men's Journal as a Preferred Source by clicking here.