1977 BMW 7 Series E23

All BMW 7 Series E23 models (with the exception of the 745i) were built with the 12-valve type-M30 six-cylinder engine as used in the older E3 and E9 cars. Although most E23 engines were fuel-injected, two models (the 728 and 730) were available with a Solex four-barrel carburetor until 1979, when they were replaced by the fuel-injected 728i. Early fuel-injected models used the Bosch L-jetronic system while later models used the more advanced digital Bosch Motronic system.

The BMW 7 Series E23 cars were very upscale and sophisticated for their time. They were the first BMWs fitted with service interval indicators, a ‘check control’ that alerted the driver to various system faults, and complex climate control systems. On-board computers and Anti-Lock Brakes (ABS) were optional on early models but later became standard features. A variety of options included leather upholstery, several types of wood trim, power seats, seat heaters, and power windows and mirrors. Later models were fitted with a driver’s air bag. 4-speed and 5-speed manual gearboxes were available (depending on the year) and an automatic transmission was also available.