The Defender was developed in the 1980s from the original Land Rover series, which launched at the Amsterdam Motor Show in April 1948. Designed as a British equivalent to the World War II Willys Jeep, the vehicle utilized an aluminium alloy bodywork and gained a reputation for ruggedness. Following the 1989 introduction of the Land Rover Discovery, "Land Rover" transitioned from a specific model name to a broader marque name. To avoid confusion with the Discovery, the Ninety and One Ten were renamed the Defender 90 and Defender 110 in 1990.
The transition from the Series III to the coil-sprung models began in 1983 with the One Ten, named for its 110-inch wheelbase. While it retained the general appearance of its predecessor, the vehicle featured a full-length bonnet, a revised grille, and wheel arch extensions. Significant mechanical modernizations included the adoption of coil springs for improved axle articulation and a permanent four-wheel-drive system derived from the Range Rover, featuring a lockable centre differential.
In 1984, the Land Rover Ninety was introduced with a 92.9-inch wheelbase. These models initially used engines carried over from the Series III, including 2.25-litre petrol and diesel units, but were soon upgraded to 2.5-litre versions. The One Two Seven, a 127-inch wheelbase variant designed for utility companies and military use, was added in 1985 to accommodate larger payloads of up to 1.4 tonnes.
During the 1980s, Land Rover faced a significant decline in sales, including a 21% fall between 1980 and 1981. To reverse this, the company streamlined operations by moving production from satellite factories into an expanded Solihull facility. The introduction of more modern engines and the Special Vehicles Division, which handled conversions like mobile workshops and amphibious versions, helped recover sales in the UK and Europe. However, Japanese competitors such as the Toyota Landcruiser and Nissan Patrol began to overtake Land Rover in African, Australian, and Middle-Eastern markets.
In the 1990s, the Defender moved upmarket with the introduction of the 200Tdi engine, which allowed for comfortable high-speed cruising and economical towing. This was followed by the 300Tdi in 1994. Between 1997 and 2001, while under BMW ownership, Land Rover South Africa produced a unique variant powered by the BMW M52 2.8-litre straight-six engine. This version became the fastest production Defender ever made, capable of 0–100 km/h in 9.3 seconds.
The Td5 engine, a five-cylinder turbodiesel, was introduced in 1998 to meet Euro III emissions regulations. This was followed in 2007 by the L316 model update, which replaced the Td5 with a Ford DuraTorq 2.4-litre engine and introduced a modern dashboard and six-speed gearbox.
The Defender's history is marked by specialized adaptations for high-profile roles. The Special Projects Division built a fleet of 127-inch V8-powered Rapier missile launchers for the British Army. In 2000, the "Tomb Raider" special edition was produced to commemorate the vehicle's role in the film franchise. For the funeral of Prince Philip, Duke of Edinburgh, a custom-built Defender TD 130 hearse, which the Duke helped design, was used to carry his coffin.
In North America, the Defender was sold between 1993 and 1997. These North American Specification (NAS) vehicles required extensive modifications to meet Department of Transportation regulations, including full external roll-cages and 3.9-litre V8 engines. Production for the US market ended in 1997 when the vehicle could not economically meet new requirements for dual airbags and side-impact protection.
Original Defender production ended on 29 January 2016 at the Solihull plant. The final vehicle, a soft-top 90 with the registration H166 HUE, was the 2,016,933rd unit produced. The discontinuation was driven by the inability of the 1940s-era design to meet 2015 European regulations regarding pedestrian crash safety (Euro NCAP) and requirements for airbags in commercial vehicles.
In September 2019, Jaguar Land Rover unveiled an all-new generation, the L663 Defender. This model represented a complete departure from its predecessor, switching from body-on-chassis to an aluminium monocoque and from rigid axles to independent suspension.
The Defender remained in production for 67 continuous years when including the original Series models. Its versatility led to its adoption by military forces worldwide, including the British Army's "Wolf" (Defender XD) and the Australian Perentie. In the UK, the Police Service of Northern Ireland utilized the "Pangolin," an armoured version of the Defender 110, for public order duties.
The Defender served as the basis for numerous licensed versions and clones globally. Santana Motors in Spain built Land Rover derivatives under licence and later as independent models like the PS10. Other manufacturers included Otokar in Turkey, Morattab in Iran (as the "Pazhan"), and Karmann in Brazil. In 2024, Land Rover announced the OCTA, a high-performance version of the L663 generation featuring a 4.4-litre Twin Turbo mild-hybrid V8.
To mark the 70th anniversary of the marque in 2018, Land Rover Classic produced the Defender Works V8. These were "restomod" vehicles—late-model Defenders selected for their condition and refitted with a 405 hp Jaguar AJ-V8 engine. Other commemorative editions included the 50th Anniversary 90, the Heritage edition, and a one-off version designed by Paul Smith in 2015 to celebrate the end of production.