The Standard SLO-4 was an automobile produced between 1922 and 1926.
The SLO-4 was fitted with a 1944cc OHV four-cylinder engine that was rated at 13.9 hp. The cars were also fitted with a four-speed gearbox (with reverse) and a 12 volt electrical system.
The cars were priced at £345, the average wage back in 1924 was £160 a year.
Various coachbuilt body styles were offered on the SLO-4 chassis named after towns in Britain that surrounded Coventry, a popular example being the Warwick tourer.
The cars had a wheelbase of 9 feet 8 inches and a track of 4 feet 3 inches. The overall length varied on which body and coachbuilder was used.