The Isuzu MU-X II 3.0 Ddi (190 Hp) 4WD Rev Tronic is a seven-seat SUV produced by Isuzu from October 2020 through 2024. Representing the second generation of the MU-X, this variant occupied a significant position in the mid-to-upper range of the lineup, offering a blend of off-road capability, family practicality, and diesel-powered efficiency. It was primarily marketed in Australia, Thailand, and other regions where body-on-frame SUVs remain popular, competing with vehicles like the Toyota Fortuner and Mitsubishi Pajero Sport. The MU-X II builds upon the foundation of the D-Max pickup truck, sharing its chassis and powertrain components, but offering a more passenger-focused experience.
Technical Specifications
| Brand | Isuzu |
| Model | MU-X |
| Generation | MU-X II |
| Type (Engine) | 3.0 Ddi (190 Hp) 4WD Rev Tronic |
| Start of production | October, 2020 |
| End of production | 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 7 |
| Doors | 5 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 11.4 kg/Hp, 87.8 Hp/tonne |
| Weight-to-torque ratio | 4.8 kg/Nm, 207.9 Nm/tonne |
| Power | 190 Hp @ 3600 rpm |
| Power per litre | 63.4 Hp/l |
| Torque | 450 Nm @ 1600-2600 rpm (331.9 lb.-ft. @ 1600-2600 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | 4JJ3-TCX |
| Engine displacement | 2999 cm3 (183.01 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 95.4 mm (3.76 in.) |
| Piston Stroke | 104.9 mm (4.13 in.) |
| Compression ratio | 16.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant | 11.1 l (11.73 US qt | 9.77 UK qt) |
| Kerb Weight | 2165 kg (4773.01 lbs.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Length | 4850 mm (190.94 in.) |
| Width | 1870 mm (73.62 in.) |
| Height | 1875 mm (73.82 in.) |
| Wheelbase | 2855 mm (112.4 in.) |
| Front track | 1570 mm (61.81 in.) |
| Rear (Back) track | 1570 mm (61.81 in.) |
| Ride height (ground clearance) | 235 mm (9.25 in.) |
| Minimum turning circle (turning diameter) | 11.2 m (36.75 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission Rev Tronic |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link suspension |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 265/60 R18; 265/50 R20 |
| Wheel rims size | 7.5J x 18; 7.5J x 20 |
Powertrain & Engine Architecture
The heart of the MU-X II 3.0 Ddi is Isuzu’s 4JJ3-TCX 3.0-liter inline-four cylinder diesel engine. This engine is a direct descendant of Isuzu’s long-standing diesel expertise, known for its durability and relatively simple design. The ‘TCX’ designation indicates the inclusion of a turbocharger and intercooler, boosting power and torque output. The engine utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The DOHC (Double Overhead Camshaft) valvetrain, with four valves per cylinder, further enhances breathing and efficiency. The 4JJ3-TCX produces 190 horsepower at 3600 rpm and a substantial 450 Nm (331.9 lb-ft) of torque between 1600 and 2600 rpm. This broad torque band is crucial for towing and off-road driving. Paired with the engine is Isuzu’s “Rev Tronic” six-speed automatic transmission. This transmission is designed for smooth shifts and efficient operation, with a focus on delivering torque to the wheels when needed. It features a torque converter for smooth launches and a manual shift mode for driver control.
Driving Characteristics
The 3.0-liter diesel and Rev Tronic automatic combination in the MU-X II provides a comfortable and capable driving experience. While not a performance-oriented vehicle, the ample torque allows for confident acceleration, even when fully loaded or towing. The automatic transmission is well-tuned for everyday driving, offering smooth gear changes. Compared to the available manual transmission, the automatic prioritizes convenience and ease of use, making it ideal for urban commutes and long highway journeys. However, the automatic does slightly diminish fuel economy compared to the manual. The gear ratios are optimized for both on-road cruising and low-speed off-road crawling. The 4WD system, selectable via a rotary dial, provides enhanced traction in challenging conditions. The MU-X II doesn’t offer the sporty handling of some car-based crossovers, but its body-on-frame construction provides a robust and stable feel.
Equipment & Trim Levels
The MU-X II 3.0 Ddi 4WD Rev Tronic typically came well-equipped, reflecting its position as a mid-to-upper trim level. Standard features generally included air conditioning, power windows and locks, a touchscreen infotainment system with Bluetooth connectivity, and a rearview camera. Higher trim levels added features like leather upholstery, heated front seats, a sunroof, and advanced safety systems such as automatic emergency braking and lane departure warning. Interior upholstery was typically cloth on lower trims and leather on higher ones. Dashboard configurations were generally consistent across trims, with a focus on functionality and durability. Optional extras included a premium audio system, roof rails, and a tow package.
Chassis & Braking
The MU-X II utilizes a traditional body-on-frame construction, providing a robust and durable platform. The front suspension consists of a double wishbone setup, while the rear features an independent multi-link suspension. This configuration aims to balance ride comfort with off-road capability. Braking systems varied slightly depending on the market, but generally included front ventilated disc brakes and rear drum brakes. ABS (Anti-lock Braking System) was standard. Stabilizer bars were fitted both front and rear to reduce body roll during cornering. The MU-X II’s chassis is designed to handle the stresses of off-road driving and towing, with a reinforced frame and robust suspension components.
Market Reception & Comparison
The Isuzu MU-X II 3.0 Ddi 4WD Rev Tronic was generally well-received by automotive critics and consumers alike. It was praised for its spacious interior, comfortable ride, and strong diesel engine. Fuel economy was considered competitive for a vehicle of its size and type, typically achieving around 8.5-9.5 liters per 100 kilometers (22-25 mpg) in mixed driving conditions. Compared to the lower-powered 1.9-liter diesel variants, the 3.0-liter offered significantly more performance, particularly when towing or carrying a full load. However, it came at a higher price point. Compared to competitors like the Toyota Fortuner, the MU-X II was often seen as offering a better value proposition, with more standard features and a more refined interior.
Legacy
The Isuzu 4JJ3-TCX engine has proven to be a remarkably reliable and durable powertrain. The MU-X II, in general, has a good reputation for long-term dependability, with many examples still in service today. The Rev Tronic automatic transmission, while not known for being the most technologically advanced, is generally considered robust and reliable. On the used car market, the 3.0 Ddi 4WD Rev Tronic variant holds its value well, due to its combination of performance, capability, and reliability. Regular maintenance, including timely oil changes and filter replacements, is crucial for ensuring the longevity of this powertrain. The MU-X II continues to be a popular choice for families and adventurers seeking a capable and dependable SUV.




