The Isuzu Bighorn, known as the Isuzu Mu in some markets, was a mid-size SUV produced by Isuzu between 1991 and 2006. The second generation, introduced in 1998 and running through 2002 in many markets, saw a significant refinement of the platform and the introduction of more powerful engine options. This article focuses specifically on the 3.5 i V6 variant, equipped with a 3.5-liter engine producing 233 horsepower and paired with a four-speed automatic transmission. This configuration represented a premium offering within the Bighorn lineup, aimed at buyers seeking a capable and comfortable SUV with substantial power.
Technical Specifications
| Brand | Isuzu |
| Model | Bighorn |
| Generation | Bighorn (SUV) |
| Type (Engine) | 3.5 i V6 (233 Hp) Automatic |
| Start of production | 1998 |
| End of production | 2002 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 8.7 kg/Hp, 114.8 Hp/tonne |
| Weight-to-torque ratio | 6.5 kg/Nm, 153.7 Nm/tonne |
| Power | 233 Hp @ 5400 rpm |
| Power per litre | 66.7 Hp/l |
| Torque | 312 Nm @ 3000 rpm, 230.12 lb.-ft. @ 3000 rpm |
| Engine layout | Front, Longitudinal |
| Engine displacement | 3494 cm3, 213.22 cu. in. |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 93.4 mm, 3.68 in. |
| Piston Stroke | 85 mm, 3.35 in. |
| Compression ratio | 9.1:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Kerb Weight | 2030 kg, 4475.38 lbs |
| Fuel tank capacity | 85 l, 22.45 US gal | 18.7 UK gal |
| Length | 4750 mm, 187.01 in |
| Width | 1745 mm, 68.7 in |
| Height | 1840 mm, 72.44 in |
| Wheelbase | 2760 mm, 108.66 in |
| Front track | 1455 mm, 57.28 in |
| Rear (Back) track | 1460 mm, 57.48 in |
| Minimum turning circle | 11.6 m, 38.06 ft |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 4 |
| Gearbox type | automatic transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Tires size | 245/70 R16 |
| Wheel rims size | 7JJ x 16 |
Introduction
The 1998-2002 Isuzu Bighorn 3.5 i V6 Automatic represented a significant step up in refinement and performance for the model. Built on the robust Bighorn platform, this variant aimed to compete with larger, more established SUVs in the market. It was positioned as the flagship trim level, offering a blend of off-road capability, on-road comfort, and a powerful V6 engine. The Bighorn, while not a major seller in the US market, found a niche following in Europe, Australia, and Asia, where its combination of features and price point proved attractive.
Powertrain & Engine Architecture
The heart of the 3.5 i V6 Bighorn is its 6VE1 engine, a 3.5-liter naturally aspirated V6. This engine utilizes a 60-degree V-angle, contributing to a relatively compact engine bay footprint. The engine employs multi-port fuel injection, delivering fuel directly to each cylinder for optimized combustion. The double overhead camshaft (DOHC) valvetrain, with four valves per cylinder, further enhances breathing and contributes to the engine’s power output. The 4-speed automatic transmission, while not the most modern by today’s standards, was chosen for its reliability and smooth operation. It provided a balance between fuel efficiency and responsiveness, although it lacked the gear ratios found in more advanced transmissions.
Driving Characteristics
The 233 horsepower and 312 Nm (230 lb-ft) of torque delivered by the 3.5L V6 provided the Bighorn with ample power for both on-road cruising and off-road adventures. While not a sports car, the Bighorn 3.5 i V6 offered brisk acceleration and effortless highway passing. The automatic transmission, while smooth, could feel somewhat sluggish during quick downshifts. Compared to the smaller 2.0-liter four-cylinder or diesel variants, the V6 offered a significantly more refined and powerful driving experience. The all-wheel-drive system, typically part-time selectable 4WD, provided excellent traction in challenging conditions. The vehicle’s weight, however, did impact handling, making it feel less nimble than some of its competitors.
Equipment & Trim Levels
The 3.5 i V6 Automatic trim typically came well-equipped, reflecting its position as the range-topping model. Standard features often included air conditioning, power windows and locks, a decent audio system, and alloy wheels. Interior upholstery was typically cloth or a combination of cloth and leather. Optional extras could include a sunroof, upgraded audio systems, and more luxurious leather upholstery. The dashboard layout was functional and straightforward, prioritizing usability over flashy design. The Bighorn offered a spacious interior for its class, with comfortable seating for five passengers.
Chassis & Braking
The Bighorn utilized a body-on-frame construction, providing a robust and durable platform. The suspension consisted of independent double wishbones at the front and a multi-link setup at the rear. This configuration aimed to balance ride comfort with off-road capability. The front brakes were ventilated discs, providing ample stopping power, while the rear brakes were drums, a cost-saving measure common in this class of vehicle. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering. The tires, typically 245/70 R16, were chosen for their all-terrain capabilities.
Market Reception & Comparison
The Isuzu Bighorn 3.5 i V6 Automatic received generally positive reviews, with critics praising its powerful engine, comfortable ride, and capable all-wheel-drive system. However, some reviewers noted the somewhat dated automatic transmission and the vehicle’s relatively high fuel consumption. Compared to competitors like the Mitsubishi Pajero or Toyota Land Cruiser Prado, the Bighorn offered a more affordable alternative with a comparable level of features and performance. The fuel economy, while adequate, was noticeably lower than that of the diesel-powered variants. Reliability was generally good, although some owners reported minor issues with the automatic transmission over the long term.
Legacy
The Isuzu Bighorn 3.5 i V6 Automatic has developed a loyal following among enthusiasts who appreciate its blend of power, capability, and affordability. While not as common as some of its competitors, well-maintained examples continue to command reasonable prices in the used car market. The 6VE1 V6 engine is known for its durability, and with proper maintenance, it can provide many years of reliable service. The Bighorn’s robust construction and capable all-wheel-drive system make it a popular choice for those seeking a versatile and dependable SUV. The 4-speed automatic transmission, while not cutting-edge, has proven to be relatively reliable, although regular fluid changes are essential for longevity.
