The Lagonda M45 was a top British performance touring car of the mid-1930s. In the middle of the 1930s, the Lagonda M45 was a top-tier British performance touring automobile. Henry Meadows' 4,467-cc inline OHV 6-cylinder engine provided the power for the M45 in 1934. Four persons may travel comfortably and quickly in the Lagonda M45.
The Lagonda M45 Rapide's 4.5-liter, overhead-valve, six-cylinder engine has two valves per cylinder and is powered by a naturally aspirated gasoline engine. In this application it provides 140 bhp (142 PS/104 kW) of power at 3100 rpm. According to claims, the Lagonda M45 Rapide has a top speed of 163 km/h (101 mph).
Additionally, modern Invicta sport tourers featured the same engine. The bores were displaced in the Lagonda version to allow for their entry. Lagonda just made a minor modification to the powerplant. With a modified M45 engine, the M45R Rapide was a true sporting variant.
American-born Wilbur Gunn (1859–1920), a former opera singer, started the Lagonda firm in the UK in Staines, Middlesex, in 1906. In 1933, the M45 made its debut at the Olympia Show. Lord de Clifford gave the M45 its best shot by traveling to Greece in the prototype and beating the railway to Brindisi by 14 hours. The M45 was a huge success.