The INEOS Grenadier was created by British billionaire Sir Jim Ratcliffe, chairman of chemical giant INEOS. In 2017, Ratcliffe approached Land Rover to buy the rights to produce the old Defender, but was refused. Instead, he founded INEOS Automotive and decided to build his own "proper 4x4". The Grenadier's boxy, utilitarian design intentionally echoes the classic Defender, featuring a stepped bonnet, round headlights, black plastic wheel arches, and a rear-mounted spare tyre. The vehicle's name comes from the London pub where Ratcliffe first envisioned the project.

The INEOS Grenadier is powered by a 3.0-litre turbocharged inline-six petrol engine sourced from BMW, producing 286 PS (282 hp) at 4,750 rpm and 450 Nm of torque from 1,750 to 4,000 rpm. It is paired with an 8-speed automatic transmission and features a full-time four-wheel drive system with low-range gearing and differential locks.

The Grenadier is designed for serious off-road use with exceptional capability. It features generous wheel articulation and suspension travel, an 800 mm wading depth, and a low-range transfer case. The overhead control panel provides easy access to various driving modes, differential locking systems, and low-range gearing. Testing in challenging conditions including rock crawling, sand dunes, and water crossings has demonstrated its ability to handle the world's harshest environments.

The INEOS Grenadier is a 5-door, 5-seater mid-size SUV. With the second-row seats folded down, it offers up to 2,035 litres of cargo space, sufficient for luggage and bulky items. The vehicle also features a Rhino Roof Rack option with a static load capacity of 420 kg and a dynamic load limit of 150 kg, allowing a roof tent to be mounted.

The INEOS Grenadier accelerates from 0 to 100 km/h in 8.6 seconds (claimed), with an electronically limited top speed of 160 km/h. The steering wheel does not return to centre naturally as in regular vehicles, which is said to improve stability off-road. On-road, there is a slight rumble from the all-terrain tyres at highway speeds, but the vehicle rides and brakes well for its class.

The Grenadier features a 12.3-inch responsive touchscreen infotainment system that can be controlled via touch or a BMW-style iDrive click wheel. It comes standard with Bluetooth, wireless Apple CarPlay, and Android Auto. The cabin's standout feature is the aircraft-inspired overhead control panel, which houses switches for driving modes, differential locks, low-range gearing, and auxiliary equipment. A small red button on the steering wheel activates a special horn to alert cyclists.

The INEOS Grenadier is equipped with all the necessary modern safety acronyms as standard. Specific safety features include comprehensive airbag coverage and electronic stability systems. The vehicle has been subjected to extensive real-world testing, covering approximately 1.8 million test kilometres in various conditions to ensure durability and reliability.

The Grenadier's interior is intentionally rugged with an industrial quality to it, with touches of technology and luxury neatly integrated. Everything in the cabin is either squared, straight, or slatted, reinforcing the utilitarian theme. The steering wheel is similar to that in a MINI Cooper, reflecting the partnership between INEOS and BMW Group. The highlight is the aircraft-style overhead control panel, which looks complicated but provides easy access to essential off-road controls.

The INEOS Grenadier competes in the premium off-road SUV segment. Its main competitors include the Land Rover Defender (which it was originally inspired by), the Toyota Land Cruiser 300, and the Nissan Patrol. The Grenadier distinguishes itself with its utilitarian focus, no-nonsense design, and exceptional out-of-the-box off-road capability, appealing to buyers who want a "proper 4x4" without unnecessary electronic complications.

The INEOS Grenadier is engineered and built to handle the world's harshest environments. The prototype was planned to accumulate around 1.8 million test kilometres in all conditions before production. This extensive testing program was designed to ensure the vehicle meets the highest standards of durability and reliability expected of a true off-road vehicle. The vehicle combines BMW-sourced engines with INEOS's own rugged chassis design.