Layout    
Rear-engine, rear-wheel-drive

Engine    
817 cc I4 (US only)
843 cc I4
903 cc I4

Transmission    
4-speed manual
4-speed Idroconvert/Idromatic semi-automatic w/ torque converter

Dimensions
Wheelbase    
2,027 mm (79.8 in)
Length    
3,575 mm (140.7 in) (saloon)
3,735 mm (147.0 in) (Familiare)
Width    
1,425 mm (56.1 in) (saloon)
1,500 mm (59.1 in) (Familiare)
Height    
1,385 mm (54.5 in) (saloon)
1,655 mm (65.2 in) (Familiare)
Kerb weight    
670 kg (1,477 lb) (saloon)

Fiat 850 on Wikipedia

MORE SPECS WILL BE HERE SOON