The Renault 21 (1986-1990) was offered with 11 distinct engine configurations across its trim range.
| Engine | Power | Torque | Transmission | Drive | Top speed | 0-100 km/h | Consumption | Available on |
|---|---|---|---|---|---|---|---|---|
| 2.0L Petrol | 175 hp | 270 Nm | Manual | Front Wheel Drive | 227 km/h | 7.4 s | 8.6 l/100km | 1 trim |
| 2.0L Petrol | 120 hp | 164 Nm | Manual | Front Wheel Drive | 200 km/h | 9.7 s | 7.9 l/100km | 4 trims |
| 2.0L Petrol | 120 hp | 164 Nm | Automatic | Front Wheel Drive | 194 km/h | — | 8.2 l/100km | 1 trim |
| 2.2L Petrol | 110 hp | 170 Nm | Manual | Front Wheel Drive | 192 km/h | 9.9 s | 8.9 l/100km | 3 trims |
| 2.2L Petrol | 110 hp | 170 Nm | Automatic | Front Wheel Drive | 186 km/h | — | 8.7 l/100km | 1 trim |
| 1.7L Petrol | 90 hp | 135 Nm | Manual | Front Wheel Drive | 185 km/h | 10.7 s | 6.9 l/100km | 3 trims |
| 2.1L Diesel | 88 hp | 181 Nm | Manual | Front Wheel Drive | 177 km/h | — | 6.7 l/100km | 1 trim |
| 1.7L Petrol | 88 hp | 132 Nm | Manual | Front Wheel Drive | 181 km/h | — | 7.5 l/100km | 2 trims |
| 1.7L Petrol | 76 hp | 126 Nm | Manual | Front Wheel Drive | 173 km/h | 12.0 s | 7.0 l/100km | 1 trim |
| 1.7L Petrol | 75 hp | 125 Nm | Manual | Front Wheel Drive | 172 km/h | — | 7.4 l/100km | 2 trims |
| 2.1L Diesel | 67 hp | 124 Nm | Manual | Front Wheel Drive | 164 km/h | 15.6 s | 6.2 l/100km | 2 trims |
Each row is a distinct mechanical configuration — engine size, power output, transmission, drivetrain and fuel type — deduplicated across equipment trims that share the same engine. Trim-only differences (interior, wheels, options) do not create a separate row.