The Opel Vectra B 2.5i V6 Automatic, produced between 1995 and 1998, represents a significant evolution in Opel’s mid-size offerings. Part of the B generation of the Vectra, this model aimed to provide a more refined and powerful alternative within the competitive European D-segment, competing with vehicles like the Ford Mondeo, Volkswagen Passat, and Peugeot 406. While not officially sold in the United States, the Vectra B was a popular choice for drivers seeking a comfortable, well-equipped, and relatively sporty sedan in Europe. The 2.5i V6 variant, in particular, stood out for its smooth power delivery and available automatic transmission.
Opel Vectra B 2.5i V6: A Detailed Overview
The Vectra B marked a departure from its predecessor, the Vectra A, with a more aerodynamic design and increased interior space. Opel focused on improving build quality and incorporating more advanced technology, aiming to elevate the Vectra’s position in the market. The 2.5i V6 model was positioned as the premium offering within the range, appealing to buyers who prioritized performance and refinement. It was a popular fleet and executive car in many European countries.
Engine & Performance
At the heart of the Vectra B 2.5i V6 lies a naturally aspirated 2.5-liter V6 engine, designated the X25XE. This engine produces 170 horsepower at 5800 rpm and 230 Nm (169.64 lb-ft) of torque at 3200 rpm. The engine’s configuration – a 60-degree V-angle – contributes to its smooth operation and relatively compact size. Power is delivered to the front wheels via a four-speed automatic transmission. This powertrain combination allows for a 0-100 km/h (0-62 mph) acceleration time of 9.5 seconds and a top speed of 227 km/h (141.05 mph). The engine’s power-to-weight ratio of 8 kg/Hp and torque-to-weight ratio of 5.9 kg/Nm contribute to a responsive driving experience. The engine features multi-port fuel injection and a double overhead camshaft (DOHC) valvetrain, optimizing combustion efficiency and power output.
Design & Features
The Opel Vectra B 2.5i V6 is a four-door sedan with a relatively conservative, yet modern for its time, design. The body lines are smooth and aerodynamic, contributing to a drag coefficient of 0.30. The interior offers seating for five passengers and provides a comfortable and practical cabin space. Trunk space is a generous 500 liters (17.66 cu. ft.) with the rear seats up, expanding to 790 liters (27.9 cu. ft.) when folded down. Safety features, while not as comprehensive as modern vehicles, included an Anti-lock Braking System (ABS) as standard equipment. The car’s dimensions are 4495 mm (176.97 in) in length, 1707 mm (67.2 in) in width, and 1425 mm (56.1 in) in height. The vehicle rides on 205/55 R16 tires mounted on 7J x 16 inch wheel rims. Hydraulic power steering provides ease of maneuverability.
Technical Specifications
| Brand | Opel |
| Model | Vectra |
| Generation | Vectra B |
| Type (Engine) | 2.5i V6 (170 Hp) Automatic |
| Start of production | October, 1995 |
| End of production | November, 1998 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 14.9 l/100 km (15.8 US mpg / 19 UK mpg) |
| Fuel consumption (extra urban) | 7.6 l/100 km (30.9 US mpg / 37.2 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.5 sec |
| Acceleration 0 – 62 mph | 9.5 sec |
| Acceleration 0 – 60 mph | 9 sec |
| Maximum speed | 227 km/h (141.05 mph) |
| Weight-to-power ratio | 8 kg/Hp |
| Weight-to-torque ratio | 5.9 kg/Nm |
| Power | 170 Hp @ 5800 rpm |
| Power per litre | 68.1 Hp/l |
| Torque | 230 Nm @ 3200 rpm (169.64 lb.-ft. @ 3200 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | X25XE |
| Engine displacement | 2498 cm3 (152.44 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 81.6 mm (3.21 in.) |
| Piston Stroke | 79.6 mm (3.13 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant | 7.7 l (8.14 US qt | 6.78 UK qt) |
| Kerb Weight | 1355 kg (2987.26 lbs.) |
| Max. weight | 1865 kg (4111.62 lbs.) |
| Max load | 510 kg (1124.36 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Trunk (boot) space – maximum | 790 l (27.9 cu. ft.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Length | 4495 mm (176.97 in.) |
| Width | 1707 mm (67.2 in.) |
| Width including mirrors | 1841 mm (72.48 in.) |
| Height | 1425 mm (56.1 in.) |
| Wheelbase | 2637 mm (103.82 in.) |
| Front track | 1484 mm (58.43 in.) |
| Rear (Back) track | 1487 mm (58.54 in.) |
| Drag coefficient (Cd) | 0.30 |
| Drivetrain Architecture | ICE – Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 4 gears, automatic transmission |
| Front suspension | Coil spring |
| Rear suspension | Coil spring |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 205/55 R16 |
| Wheel rims size | 7J x 16 |
The Opel Vectra B 2.5i V6 Automatic, while not a high-performance sports sedan, offered a compelling blend of comfort, practicality, and respectable performance for its time. It remains a popular choice among classic car enthusiasts in Europe, appreciated for its smooth V6 engine and relatively affordable maintenance.
