Production years: 1971–1984 (1989) A general-purpose small bus, built from 1971 on the special GAZ-53-40 bus chassis from the Gorky Automobile Plant. From 1984 GAZ-53-12 chassis were used; at first the model designation was KAvZ-685M (recognisable by its modified grille). From 1986 the designation was KAvZ-3270, recognisable by the wipers hung from the top edge of the windscreen and the multi-part destination window. The KAvZ-3270 was built until 1989, when the KAvZ-3976, based on the units and front end of the GAZ-3307 truck, went into production (it is still in production). In Estonia KAvZ buses were widely used by agricultural and industrial enterprises. Technical data: Engine ZMZ-53, 4250 cc, 85 kW/115 hp Gearbox GAZ-53 (4 speeds) Axles GAZ-53 Body: on an all-metal frame, three doors (driver's door, front passenger door and emergency exit in the rear wall) Passenger capacity: 21 seated, 28 including standing Kerb weight: 4080 kg Gross weight: 6545 kg Dimensions (L*W*H): 6600*2378*2930 mm Top speed: 80 km/h Reference fuel consumption at 40 km/h: 19.6 litres/100 km Variants: KAvZ-685B – for arctic regions, with extra body insulation and double side windows KAvZ-685G – for mountain regions, with an electrodynamic auxiliary brake and a reinforced body KAvZ-685Yu – for tropical climates.