Fiat 131 4 doors (1978 – 1981) vs Renault 18 (1978 – 1984): specs compared

The Fiat 131 4 doors is the more powerful of the two, with up to 140 hp against 125 hp. It is quicker, reaching 100 km/h in 8.3 s against 10.0 s. The Renault 18 has the higher top speed: 195 km/h against 190 km/h. It uses less fuel, from 6.6 L/100 km against 7.9 L/100 km. It is the lighter car, from 900 kg against 1,060 kg. At 4,379 mm, the Renault 18 is 147 mm longer than the Fiat 131 4 doors.

Specification Fiat 131 4 doors Fiat 131 4 doors 1978 – 1981 Renault 18 Renault 18 1978 – 1984
Overview
Origin Italy France
Documented years 1978 – 1981 1978 – 1984
Body style 4 Doors · Sedan —
Variants 7 7
Fuel Diesel, Petrol Petrol, Diesel
Drive RWD FWD
Gearbox Automatic · Manual Manual
Performance
Power 72 – 140 hp 63 – 125 hp
Torque 110 – 214 Nm 105 – 181 Nm
0–100 km/h 8.3 – 18.0 s 10.0 – 18.0 s
Top speed 150 – 190 km/h 150 – 195 km/h
Economy
Fuel economy 7.9 – 12.0 L/100 km 6.6 – 8.5 L/100 km
Dimensions
Length 4,232 mm 4,379 mm
Width 1,646 mm 1,689 mm
Height 1,405 mm 1,400 mm
Wheelbase 2,479 mm 2,441 mm
Curb weight 1,060 – 1,195 kg 900 – 1,080 kg

Ranges cover all variants of each car. The highlight marks the best version per row.

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