The Volvo P1800 is a two-passenger, front-engine, rear-drive sports car manufactured and marketed by Volvo Cars as a coupe (1961–73) and shooting-brake (1972–73). In 1963 production was moved to Volvo's Lundby Plant in Gothenburg and the car's name was changed to 1800S (S standing for Sverige, or in English : Sweden). The engine was improved with an additional 8 hp (6 kW). In 1966 the four-cylinder engine was updated to 115bhp (85 kW). Top speed was 175 km/h (109 mph). In 1969 the B18 engine was replaced with the 2-litre B20B variant of the B20 giving 118 bhp (87 kW), though it kept the designation 1800S.