0–100 km/h: 9 of 35 variants rated.
Renault 18 tops the Renault 18 ranking by 0–100 km/h, at 16.7 s.
Across 9 ranked variants, 0–100 km/h spans from 10.0 s to 16.7 s.
| # | Variant | Year | Body | Fuel | 0–100 km/h |
|---|---|---|---|---|---|
| 1 | Renault 18 | 1978 | Sedan | Petrol | 16.7 s |
| 2 | Renault 18 TL | 1978 | Sedan | Petrol | 16.7 s |
| 3 | Renault 18 GTL | 1978 | Sedan | Petrol | 16.7 s |
| 4 | Renault 18 TD | 1980 | Sedan | Diesel | 16.6 s |
| 5 | Renault 18 GTD | 1980 | Sedan | Diesel | 16.6 s |
| 6 | Renault 18 GTL | 1981 | Sedan | Petrol | 14.4 s |
| 7 | Renault 18 TX | 1982 | Sedan | Petrol | 11.6 s |
| 8 | Renault 18 GTX | 1982 | Sedan | Petrol | 11.6 s |
| 9 | Renault 18 Turbo | 1980 | Sedan | Petrol | 10.0 s |