The 2025 Isuzu MU-X Onyx is here, and it’s ready to take on the Toyota Fortuner as the king of the bakkie-based SUV segment. With its rugged design, proven reliability, and impressive off-road capabilities, the MU-X is more than just a competitor—it’s a Fortuner beater in every sense. We put the range-topping MU-X 3.0TD Onyx 4×4 through its paces on a road trip, and here’s why it might just be the best family adventure SUV on the market.
Why the MU-X Beats the Fortuner
The Toyota Fortuner has long been the go-to choice for buyers in the bakkie-based SUV segment, but the 2025 Isuzu MU-X is here to shake things up. While the Fortuner offers a polished driving experience and a strong reputation, the MU-X counters with better value for money, superior off-road credentials, and a more practical interior. Let’s break it down.
Rugged Simplicity Meets Modern Tech
The MU-X is built for durability, and it shows. Unlike the Fortuner, which focuses on refinement, the MU-X embraces its rugged roots with a traditional leaf spring rear suspension and a part-time 4×4 system. These features may seem old-school, but they’re perfect for tackling tough terrain without worrying about complicated electronics.
The 3.0-litre turbodiesel engine is a standout, delivering 140 kW and 450 Nm of torque—enough to outmuscle the Fortuner’s 2.8-litre engine in real-world driving. Paired with a 6-speed automatic transmission, the MU-X offers smooth power delivery and impressive fuel efficiency, with a claimed 7.6 L/100 km on the combined cycle.
Off-Road Dominance
When it comes to off-road capability, the MU-X leaves the Fortuner in the dust. With 235 mm of ground clearance, a low-range transfer case, and a rear differential lock, the MU-X is ready for anything. The shift-on-the-fly 4×4 system makes it easy to switch between modes, while Rough Terrain Mode ensures traction on loose surfaces.
During our off-road test, the MU-X handled steep inclines, rocky trails, and deep ruts with ease. The Fortuner, while capable, can’t match the MU-X’s confidence-inspiring performance in challenging conditions.
Practicality and Comfort
The MU-X also beats the Fortuner when it comes to practicality. With all three rows in use, there’s 311 litres of boot space—more than enough for a weekend getaway. Fold down the third row, and that expands to 1,119 litres, while dropping the second row opens up a massive 2,138 litres of cargo space.
Inside, the MU-X’s cabin is more spacious and user-friendly than the Fortuner’s. The Onyx model adds premium touches like heated front seats, leather upholstery, and a 9-inch touchscreen with Apple CarPlay and Android Auto. Second-row passengers enjoy generous legroom and amenities like USB-C ports and a 220V plug socket. The third row, while best suited for children, is surprisingly accessible and comfortable.
On the Road: Smooth and Efficient
On the highway, the MU-X is quiet and composed, with minimal road noise and a comfortable ride. The 6-speed automatic transmission shifts seamlessly, and the adaptive cruise control makes long drives a breeze. While the Fortuner offers a slightly more refined driving experience, the MU-X’s rugged charm and superior fuel efficiency give it the edge.
The 1.9-Litre Option: A Budget-Friendly Alternative
For those who don’t need the full power of the 3.0-litre engine, Isuzu offers a 1.9-litre turbodiesel option. While it’s down on power (110 kW and 350 Nm), it’s more fuel-efficient, with a claimed 7.4 L/100 km. It’s also R40,000 cheaper, making it an attractive option for buyers on a budget.
However, the smaller engine struggles with heavy loads and steep inclines, making it better suited for urban driving and light towing. If you’re planning serious off-roading or frequent towing, the 3.0-litre engine is worth the extra cost.
Safety and Reliability
The MU-X is built to last, and our test unit—with over 35,000 km on the odometer—showed minimal signs of wear and tear. The cabin remained rattle-free, and the interior materials held up well despite heavy use.
Safety features include autonomous emergency braking, blind-spot monitoring, rear cross-traffic alert, and seven airbags. The MU-X also boasts a 5-star ANCAP safety rating, making it a solid choice for families.
The Verdict: A True Fortuner Beater
The 2025 Isuzu MU-X Onyx is a rugged, reliable SUV that excels in both on- and off-road conditions. While the Toyota Fortuner may have the edge in refinement, the MU-X offers better value for money, superior off-road capabilities, and a more practical interior. Whether you’re tackling a weekend adventure or shuttling the family around town, the MU-X is up to the task.
For those who prioritize performance and towing capacity, the 3.0TD Onyx 4×4 is the pick of the range. But if you’re after a budget-friendly daily driver, the 1.9-litre variant is a worthy contender.
Specifications at a Glance
| Model | Engine | Power/Torque | Fuel Economy | Price (Before On-Road Costs) |
|---|---|---|---|---|
| MU-X 1.9TD LS-M 4×2 | 1.9L 4-cyl turbodiesel | 110 kW / 350 Nm | 7.4 L/100 km | R736,900 |
| MU-X 3.0TD Onyx 4×4 | 3.0L 4-cyl turbodiesel | 140 kW / 450 Nm | 7.6 L/100 km | R978,200 |
The 2025 Isuzu MU-X Onyx proves that sometimes, simplicity is the ultimate sophistication. It’s a no-nonsense SUV that gets the job done, whether you’re on the school run or exploring the great outdoors. If you’re in the market for a bakkie-based SUV, the MU-X is the Toyota Fortuner beater you’ve been waiting for.
