The Isuzu MU-X RF10 3.0d, equipped with a 177 horsepower diesel engine and automatic transmission, was a significant model for Isuzu, particularly in markets outside of North America. Produced from 2013 to 2017, this variant occupied a mid-range position within the MU-X lineup, offering a balance between capability, comfort, and fuel efficiency. The MU-X, a body-on-frame SUV, was designed to compete with vehicles like the Toyota Fortuner and Mitsubishi Pajero Sport, primarily targeting families and those requiring a robust vehicle for varied terrain. It represented Isuzu’s attempt to capitalize on the growing popularity of mid-size SUVs with a focus on durability and practicality.
Technical Specifications
| Brand | Isuzu |
| Model | MU-X |
| Generation | MU-X (RF10) |
| Type (Engine) | 3.0d (177 Hp) Automatic |
| Start of production | 2013 |
| End of production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 10.5 l/100 km (22.4 US mpg, 26.9 UK mpg, 9.5 km/l) |
| Fuel consumption (extra urban) | 6.9 l/100 km (34.1 US mpg, 40.9 UK mpg, 14.5 km/l) |
| Fuel consumption (combined) | 8.2 l/100 km (28.7 US mpg, 34.4 UK mpg, 12.2 km/l) |
| CO2 emissions | 217 g/km |
| Fuel Type | Diesel |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 10.7 kg/Hp, 93.2 Hp/tonne |
| Weight-to-torque ratio | 5 kg/Nm, 200 Nm/tonne |
| Power | 177 Hp @ 3600 rpm |
| Power per litre | 59 Hp/l |
| Torque | 380 Nm @ 1800-2800 rpm (280.27 lb.-ft. @ 1800-2800 rpm) |
| Engine Model/Code | 4JJ1-TC |
| 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 | 17.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.9 l (7.29 US qt | 6.07 UK qt) |
| Coolant capacity | 11.1 l (11.73 US qt | 9.77 UK qt) |
| Kerb Weight | 1900-1940 kg (4188.78 – 4276.97 lbs.) |
| Max. weight | 2650 kg (5842.25 lbs.) |
| Max load | 710-750 kg (1565.28 – 1653.47 lbs.) |
| Trunk (boot) space – minimum | 235 l (8.3 cu. ft.) |
| Trunk (boot) space – maximum | 1830 l (64.63 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Permitted trailer load with brakes (12%) | 3000 kg (6613.87 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4825 mm (189.96 in.) |
| Width | 1860 mm (73.23 in.) |
| Height | 1825-1830 mm (71.85 – 72.05 in.) |
| Wheelbase | 2845 mm (112.01 in.) |
| Front track | 1570 mm (61.81 in.) |
| Rear (Back) track | 1570 mm (61.81 in.) |
| Front overhang | 905 mm (35.63 in.) |
| Rear overhang | 1075 mm (42.32 in.) |
| Ride height (ground clearance) | 220-230 mm (8.66 – 9.06 in.) |
| Minimum turning circle (turning diameter) | 11.6 m (38.06 ft.) |
| Approach angle | 29.5-30.1° |
| Departure angle | 24.6-25.1° |
| Ramp-over (brakeover) angle | 21.9-22.6° |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 5 gears, automatic transmission Rev-Tronic |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/70 R16; 255/65 R17 |
| Wheel rims size | 7J x 16; 7J x 17 |
Powertrain & Engine Architecture
The heart of the MU-X 3.0d was Isuzu’s 4JJ1-TC 3.0-liter inline-four diesel engine. This engine, a staple in Isuzu’s commercial and passenger vehicle lineups, is known for its robustness and relatively simple design. The ‘TC’ designation indicates the presence of a turbocharger and intercooler, enhancing power output and efficiency. The engine utilized a common rail direct injection system, delivering fuel directly into the cylinders at extremely high pressure for optimized combustion. The DOHC (Double Overhead Camshaft) valvetrain, with four valves per cylinder, further contributed to improved breathing and performance. The automatic transmission was a 5-speed unit marketed as ‘Rev-Tronic’ by Isuzu. While not the most modern transmission available at the time, it was chosen for its reliability and suitability for the vehicle’s intended use.
Driving Characteristics
The 177 horsepower and 380 Nm (280 lb-ft) of torque provided by the 3.0d engine delivered adequate performance for the MU-X, though it wasn’t particularly sporty. Acceleration was reasonable, but the automatic transmission sometimes felt hesitant during quick overtaking maneuvers. The torque curve was relatively flat, providing good pulling power at lower engine speeds, which was beneficial for towing and off-road driving. Compared to the higher-output engine options available in some markets, this variant prioritized fuel economy and ease of driving over outright performance. The automatic transmission, while convenient, did result in some power loss compared to the available manual transmission options.
Equipment & Trim Levels
The MU-X 3.0d Automatic typically came equipped with features such as air conditioning, power windows, power door locks, and a basic audio system. Higher trim levels added features like alloy wheels, a more sophisticated audio system with Bluetooth connectivity, and rear parking sensors. Interior upholstery was generally cloth, with leather options available as an upgrade. The dashboard layout was functional and straightforward, prioritizing practicality over luxury. Optional extras included a sunroof, navigation system, and a rear-view camera.
Chassis & Braking
The MU-X utilized a traditional body-on-frame construction, providing a robust and durable platform. The front suspension consisted of a double wishbone setup, while the rear employed an independent multi-link spring suspension with a stabilizer bar. This configuration aimed to balance ride comfort with handling stability. Braking duties were handled by ventilated discs at the front and discs at the rear, equipped with an Anti-lock Braking System (ABS) as standard. The suspension was tuned for comfort and load-carrying capacity, rather than sporty handling.
Market Reception & Comparison
The Isuzu MU-X 3.0d Automatic was generally well-received in markets where it was sold, particularly for its reliability and practicality. Critics praised its robust build quality and comfortable ride. However, some noted that the automatic transmission could feel sluggish at times, and the interior lacked the refinement of some competitors. Compared to other trims in the MU-X lineup, the 3.0d Automatic offered a more affordable entry point, appealing to buyers who prioritized fuel efficiency and ease of use over outright performance. Its fuel economy was competitive within its class, and its overall running costs were relatively low.
Legacy
The Isuzu MU-X RF10 3.0d Automatic has proven to be a reliable and durable vehicle in the used car market. The 4JJ1-TC engine is known for its longevity, and the automatic transmission, while not cutting-edge, has generally held up well over time. These vehicles are often sought after by those looking for a capable and affordable SUV for family use or light commercial applications. While not a performance icon, the MU-X 3.0d Automatic represents a solid and dependable choice for buyers seeking a practical and robust vehicle.
