Opel Monterey

Opel Monterey: Which Version Should You Buy?

The Opel Monterey choice comes down to four engine and transmission combinations across the original model and its restyling: 3.1 MT, 3.1 AT, 3.2 MT, 3.2 AT, 3.0 MT, 3.0 AT, 3.5 MT, and 3.5 AT. For outright performance, the restyled 3.5 MT and 3.5 AT lead with 215 hp, 310 Nm, a top speed of 180 km/h, and acceleration from 0 to 100 km/h in either 11.3 or 11.8 seconds, depending on kerb weight.

The Opel Monterey choice comes down to four engine and transmission combinations across the original model and its restyling: 3.1 MT, 3.1 AT, 3.2 MT, 3.2 AT, 3.0 MT, 3.0 AT, 3.5 MT, and 3.5 AT. For outright performance, the restyled 3.5 MT and 3.5 AT lead with 215 hp, 310 Nm, a top speed of 180 km/h, and acceleration from 0 to 100 km/h in either 11.3 or 11.8 seconds, depending on kerb weight. For torque at lower engine speed, the restyled 3.0 MT and 3.0 AT provide 333 Nm at 2,000 rpm. Buyers considering the earlier model can choose between the 114 hp 3.1 diesel and the 177 hp 3.2 gasoline engine. Every listed version is AWD and has 210 mm of ground clearance.

Opel Monterey generations: what changed?

The original Opel Monterey ran from March 1992 to August 1998 as an SUV 3-doors. Its eight listed entries cover 3.1 MT, 3.1 AT, 3.2 MT, and 3.2 AT, with duplicated names reflecting different kerb weights. The 3.1 diesel versions have 114 hp and 260 Nm, while the 3.2 gasoline versions have 177 hp and 260 Nm. Buyers could select a 5-speed Manual or a 4-speed Automatic.

The restyling ran from July 1998 to April 1999 and retained the SUV 3-doors body. Its eight entries cover 3.0 MT, 3.0 AT, 3.5 MT, and 3.5 AT, again with duplicated names at different kerb weights. The 3.0 diesel produces 159 hp and 333 Nm, while the 3.5 gasoline engine produces 215 hp and 310 Nm. Transmission choices remained a 5-speed Manual and a 4-speed Automatic.

The clearest generational gains are in output. The restyled 3.0 diesel has 45 hp more and 73 Nm more than the original 3.1 diesel. The restyled 3.5 gasoline engine adds 38 hp and 50 Nm over the original 3.2 gasoline engine. Maximum speed rises by 10 km/h for both fuel types: from 150 to 160 km/h for the diesels and from 170 to 180 km/h for the gasoline versions.

Opel Monterey engine and specs comparison

The original 3.1 MT and 3.1 AT develop 114 hp at 3,600 rpm and 260 Nm at 2,000 rpm. Their specific output is approximately 37.3 hp per litre. They use 2 valves per cylinder, a compression ratio of 20, and a bore-and-stroke measurement of 95.4 × 107 mm.

The original 3.2 MT and 3.2 AT develop 177 hp at 5,200 rpm and 260 Nm at 3,750 rpm. Specific output is approximately 55.9 hp per litre, 18.6 hp per litre higher than the 3.1 diesel. These versions use 4 valves per cylinder, distributed injection (multi-point), a compression ratio of 9.3, and a bore-and-stroke measurement of 93.4 × 77 mm.

The restyled 3.0 MT and 3.0 AT produce 159 hp at 3,900 rpm and 333 Nm at 2,000 rpm. Their specific output is approximately 53.0 hp per litre, an improvement of about 15.7 hp per litre over the earlier 3.1 diesel. They use 4 valves per cylinder, a compression ratio of 19, and a bore-and-stroke measurement of 95.4 × 104.9 mm.

The restyled 3.5 MT and 3.5 AT deliver 215 hp at 5,400 rpm and 310 Nm at 3,000 rpm. At approximately 61.5 hp per litre, they have the highest specific output in the catalogue. They use 4 valves per cylinder, distributed injection (multi-point), a compression ratio of 9.4, and a bore-and-stroke measurement of 93.4 × 85 mm.

Performance, mpg and fuel economy

No city, highway, or combined fuel-consumption figure was measured for any listed Opel Monterey version. CO₂ output and ecological class were also not measured, so the catalogue cannot support an mpg or emissions comparison.

The original 3.2 gasoline versions reach 100 km/h 5.1 seconds sooner than the 3.1 diesel versions. In the restyling, the lighter 3.5 versions beat the equivalent lighter 3.0 versions by 4.5 seconds, while the heavier examples reduce that difference to 4.7 seconds.

Opel Monterey dimensions, weight and clearance

Exterior length, width, height, and wheelbase are not measured in the supplied specifications. Wheel sizes are also not measured for every version.

All listed versions have 210 mm of ground clearance and an 85-litre fuel tank. Kerb weight ranges from 1,795 kg for a lighter original 3.2 MT or 3.2 AT to 2,035 kg for a heavier restyled 3.0 MT or 3.0 AT, a difference of 240 kg.

The original 3.1 diesel has kerb weights of 1,900 or 1,985 kg and a gross weight of 2,500 kg. The original 3.2 gasoline version weighs 1,795 or 1,880 kg and has a gross weight of 2,600 kg. The restyled 3.0 diesel weighs 1,965 or 2,035 kg, while the restyled 3.5 gasoline version weighs 1,865 or 1,945 kg; both have a gross weight of 2,600 kg.

Weight per horsepower makes the performance difference especially clear. The original 3.1 diesel carries approximately 16.7–17.4 kg per hp, versus approximately 10.1–10.6 kg per hp for the original 3.2 gasoline engine. The restyled 3.0 diesel improves to approximately 12.4–12.8 kg per hp, while the restyled 3.5 gasoline version leads at approximately 8.7–9.0 kg per hp.

Reliability, problems and service information

Reliability, known problems, maintenance intervals, repair costs, and service-manual procedures are not measured in the supplied data. Those factors therefore cannot be used to rank the versions here. The specifications do show that every engine is mounted front, longitudinal and that all versions use AWD, but these facts alone do not establish reliability.

Which Opel Monterey version should you buy?

Choose 3.5 MT if performance per unit of weight is the priority. It combines 215 hp, 310 Nm, a 5-speed Manual, AWD, a 180 km/h top speed, and the best recorded acceleration: 11.3 seconds at a 1,865 kg kerb weight. The heavier 1,945 kg 3.5 MT records 11.8 seconds.

Choose 3.5 AT for the same engine output with a 4-speed Automatic. Its recorded performance exactly matches the corresponding 3.5 MT entries: either 11.3 or 11.8 seconds to 100 km/h and 180 km/h. The data therefore identify transmission type, rather than measured performance, as the deciding difference.

Choose 3.0 MT or 3.0 AT if peak torque and low-speed torque delivery matter more than acceleration. Both generate the catalogue-high 333 Nm at 2,000 rpm, which is 23 Nm more than the 3.5 gasoline versions and 73 Nm more than either original engine. The trade-off is acceleration of 15.8 or 16.5 seconds and a 160 km/h maximum speed.

Among original-generation versions, choose 3.2 MT or 3.2 AT for the stronger power-to-weight result. With 177 hp and 1,795–1,880 kg kerb weight, they are substantially ahead of the 114 hp 3.1 MT and 3.1 AT. Their 11.5-second acceleration and 170 km/h top speed also sit much closer to the restyled 3.5 than to the original diesel.

Choose 3.1 MT or 3.1 AT only when its particular specification fits the requirement: Diesel fuel, Turbo boost, 260 Nm at 2,000 rpm, and the choice between a 5-speed Manual and a 4-speed Automatic. Its measurable compromises are the lowest output at 114 hp, the slowest acceleration at 16.6 seconds, and the lowest top speed at 150 km/h.

No price or sale data are available, so the extra money required for any engine or generation is not measured. On specifications alone, the 3.5 MT is the strongest performance choice, the 3.5 AT offers the same recorded performance with an Automatic gearbox, and the 3.0 MT or 3.0 AT provides the highest torque at the lowest listed torque-speed point.