To homologate the 205 T16 for Group B competition, Peugeot was required under FIA regulations to produce a minimum of 200 road-going examples. The body was constructed by coachbuilder Heuliez, which received standard three-door Peugeot 205 bodyshells from the production line and heavily modified them. Heuliez cut away the complete rear section and welded in a transverse firewall behind the B-pillars, then fabricated a new rear frame from a combination of sheet steel profiles and tubes. The front of the car received similar tube-frame treatment to carry the revised suspension geometry.
The engine in the road version was a 1,775 cc unit derived from the cast-iron block of the XU diesel engine family, fitted with a specially developed 16-valve cylinder head — the "16" in the car's name refers to the DOHC 16-valve configuration, while "T" denotes the KKK turbocharger. Fuel delivery was handled by Bosch K-Jetronic injection. The road cars produced approximately 200 PS at 6,750 rpm with 255 N·m of torque, less than half the output of the full competition specification. The engine was mounted transversely in a rear-mid position, transforming the car from a conventional front-engined, front-wheel-drive layout into a rear-mid-engine, four-wheel-drive machine. The gearbox was sourced from the Citroën SM but re-oriented for transverse mounting.
All 200 street versions were produced in left-hand drive and finished in dark grey, with the exception of the first car (VIN P1), which was painted white and carried full competition livery for demonstration purposes. Later competition vehicles of the Evolution 2 series replaced the sheet steel profiles in the rear spaceframe with an all-tube construction for additional rigidity and weight savings.
Under the direction of Jean Todt at Peugeot Talbot Sport, the factory 205 T16 programme was the most successful Group B operation in the final two years of that era. Timo Salonen won the 1985 WRC Drivers' Championship in the 205 T16, with Peugeot simultaneously claiming the Constructors' title. In 1986, Juha Kankkunen repeated the drivers' title, again with the Constructors' championship going to Peugeot, this time using the Evolution 2 specification. The car defeated formidable opposition from Audi, Lancia, and Ford across both championship seasons.
Beyond its WRC campaign, the 205 Turbo 16 was adapted for rally raid competition, where the extreme distance, navigation demands, and varied terrain of events such as the Paris-Dakar Rally presented a fundamentally different set of challenges from closed-road stage rallying. The car's four-wheel-drive system and mid-engine layout gave it a robust mechanical foundation for adaptation to desert and rough-terrain environments. Peugeot's involvement in the Dakar Rally during this period contributed to the manufacturer's motorsport profile across multiple disciplines simultaneously.
The separation of the 205 T16 from the standard 205 extended to virtually every structural and mechanical component. The wider wheel arches accommodated competition-width tracks, and the entire rear body section hinged upward to provide access to the mid-mounted engine — a configuration that became visually iconic for the car. The complex four-wheel-drive drivetrain from the competition cars was retained in the road versions to satisfy homologation requirements.
The chassis and engine architecture of the 205 T16 later served as the mechanical foundation for the Peugeot Quasar concept car, underlining the significance of the platform beyond motorsport.
The Peugeot 205 Turbo 16 is widely regarded as one of the most capable and fearsome Group B cars produced. Its back-to-back WRC championship wins in the final two seasons before the category was banned following a series of fatal accidents in 1986 represent a peak of Group B competition that has not been surpassed. The car's combination of extreme power, all-wheel drive, and mid-engine balance defined what a Group B car could be, and it remains a touchstone of 1980s motorsport engineering. For Peugeot Talbot Sport, the programme demonstrated the potential of a committed factory effort and established Jean Todt's reputation as a team director ahead of his later work with Ferrari in Formula One.