The Volvo P1800 was created to attract the attention of passersby to Volvo's display windows and to increase what today is known as "floor traffic". The sports car had a fixed roof, a steel body, a lot of the mechanical components lifted straight from the Volvo Amazon with a newly developed B18 engine producing 100 hp.
Production started in 1961 at Jensen factory in UK and 6,000 cars was manufactured at this facility. In 1962 production was moved to the Volvo factory in Lundby (Sweden). With some modifications (hubcaps, emblems, indicators and some interior changes) the car was renamed 1800S (with the S standing for Sweden).
In August 1969 Volvo introduced P1800E with the B20E-engine featuring an electrical fuel injection-system made by Bosch. (The “E” in 1800 E stands for “Einspritz”, meaning “electronic fuel injection”). The 1800E also had a dual circuit brake-system, four disc brakes, new aluminum rims and a new grille. Automatic gearbox was offered as an option.
Volvo introduced its final P1800 variant, the 1800ES, in 1972 as a two-door station wagon with a frameless, all-glass tailgate. The ES engine was downgraded to 125 bhp by reducing the compression ratio with a thicker head gasket (engine variant B20F).
For the last model year, 1973, only the 1800ES was produced.
Total production of the P1800 from 1961 through 1973 was 47,492 units.