The Autovia engine was created by sticking two Riley 1½Litre engines together, in much the same way as the Nine engine was used in the 8/90. The two blocks were mounted on a common crank, at 90°, while the rest was in traditional Riley style.
The cars were mainly sold as chassis, for outside suppliers to build the bodies - most were built by Mulliners. The two 'standard' bodies were the Saloon and Limosuine, and whilst it is known that not all of the cars were bodied by Mulliners, the only surviving bodies are to the two basic designs. One of the Mulliner saloons is termed a Sports Saloon, but the body differs from the standard saloon in minor details only.
The name Autovia was used to try and create a new brand - hoping to suceed where the Riley 8/90 failed. However, it was not to be, and after a mere 44 cars were built, Autovia was wound up in a desperate attempt to keep Riley afloat. approximately 9 complete / restorable cars appear to survive, with 2 or 3 chassis also remaining, one of which has been shortened as a special.
RAC rating 23.8hp
Bore 69mm Stroke 95.25mm
Firing Order 1, 5, 4, 8, 6, 3, 7, 2
Capacity 2849 cc
99bhp at 4700rpm
Carburation 2 Zenith
TRANSMISSION4-speed Armstrong Siddeley Preselector Gearbox
or 4-speed epicyclic gearbox (very few, if any).
Top gear ratio 4.57:1
3rd g/r 6.24:1
2nd g/r 9.46:1
1st g/r 16.25:1
BRAKESGirling mechanical rod with wedge operated shoes
Special Saloon: £995
DIMENSIONSWheelbase 10'9" (aprx 3260mm)
Track 4'8.5" (aprx 1420mm)
Length 14'7.5" / 15'3" (aprx 4450mm / 4640mm
Width 5'11" (aprx 1800mm)
Fuel Tank 16galls
Wheels Dunlop 3.50x19" Centre lock wire
Tyres 5.50 x 19