Fuel consumption: 9 of 9 variants rated.
Opel Monza 3.0 E SC tops the Opel Monza ranking by Fuel consumption, at 11.9 l/100km (23.7 mpg UK · 19.8 mpg US).
Across 9 ranked variants, Fuel consumption spans from 9.9 l/100km (28.5 mpg UK · 23.8 mpg US) to 11.9 l/100km (23.7 mpg UK · 19.8 mpg US).
| # | Variant | Year | Body | Fuel | Fuel consumption |
|---|---|---|---|---|---|
| 1 | Opel Monza 3.0 E SC | 1978 | Coupe | Petrol | 11.9 l/100km (23.7 mpg UK · 19.8 mpg US) |
| 2 | Opel Monza 2.8 S | 1978 | Coupe | Petrol | 11.5 l/100km (24.6 mpg UK · 20.5 mpg US) |
| 3 | Opel Monza 2.8 S S | 1978 | Coupe | Petrol | 11.5 l/100km (24.6 mpg UK · 20.5 mpg US) |
| 4 | Opel Monza 2.5 E | 1981 | Coupe | Petrol | 11.0 l/100km (25.7 mpg UK · 21.4 mpg US) |
| 5 | Opel Monza 2.5 E S | 1981 | Coupe | Petrol | 11.0 l/100km (25.7 mpg UK · 21.4 mpg US) |
| 6 | Opel Monza 3.0i Sport | 1983 | Coupe | Petrol | 10.3 l/100km (27.4 mpg UK · 22.8 mpg US) |
| 7 | Opel Monza 3.0i Comfort | 1983 | Coupe | Petrol | 10.3 l/100km (27.4 mpg UK · 22.8 mpg US) |
| 8 | Opel Monza 3.0i GSi | 1983 | Coupe | Petrol | 10.3 l/100km (27.4 mpg UK · 22.8 mpg US) |
| 9 | Opel Monza 2.5i | 1984 | Coupe | Petrol | 9.9 l/100km (28.5 mpg UK · 23.8 mpg US) |