With the updated fourth-generation Mercedes-Benz GLE having been unveiled, we take a closer look at the outgoing, pre-facelifted model as a used buy.
When the fourth-generation Mercedes-Benz GLE (codenamed ‘W167’) debuted in South Africa in late 2019, it arrived tasked with wrestling back market dominance from the BMW X5 and the Audi Q7. Replacing the mechanically solid but ageing W166, this iteration was a comprehensive structural and electronic overhaul designed to redefine the premium family SUV. Mercedes-Benz introduced a highly complex, “digital-first” architecture, transitioning from traditional analogue interfaces to a screen-dominated cabin, while simultaneously rolling out sophisticated 48 V mild-hybrid tech. However, as these early W167 models plunge down the depreciation curve and populate the pre-owned market, you need to know what you’re getting into if this SUV is on your radar as a used buy.
A rundown on the Mercedes-Benz GLE
The W167’s exterior optimises aerodynamic efficiency, dropping its drag coefficient to an impressive 0.29. Dimensionally, the wheelbase was stretched by 80 mm over its predecessor, thereby maximising interior volume and improving high-speed stability. The AMG Line aesthetic, heavily favoured by South African buyers, visually anchored the vehicle’s stance with a diamond-studded radiator grille, gaping air intakes, and imposing 20- to 22-inch alloy wheels.
Inside, the cabin was revolutionised by the MBUX (Mercedes-Benz User Experience) infotainment ecosystem. Dominating the dashboard are dual 12.3-inch high-resolution displays that are integrated beneath a continuous glass panel. This dash did away with physical switchgear in favour of capacitive touch surfaces, advanced voice telemetry, and steering wheel-mounted haptic buttons. The 80 mm wheelbase extension translated into generous second-row legroom, while boot capacity expanded to a cavernous 825 litres, stretching to 2 055 litres with the rear seats folded flat. An optional third row allowed it to operate as a part-time seven-seater, though space in the rear is strictly reserved for small children.
At launch, the South African engine lineup was defined by smooth, torque-rich powerplants paired with Mercedes-Benz’s 9G-Tronic nine-speed automatic transmission and fully variable 4Matic all-wheel drive. The entry-level GLE 300d 4Matic employed a 2.0-litre, four-cylinder turbodiesel producing 180 kW and 500 N.m of torque. This unit has a claimed fuel consumption of around 6.1 L/100 km. For buyers requiring more mechanical refinement, the definitive GLE 400d 4Matic is powered by a smooth 2.9-litre inline-six turbodiesel, which punches out 243 kW and 700 N.m.
Aside from the AMG models, the petrol contingent was spearheaded by the GLE 450 4Matic. Featuring a 3.0-litre turbocharged inline-six, it developed 270 kW and 500 N.m. Crucially, it integrated EQ Boost 48 V mild-hybrid tech, which provides an additional 16 kW and 250 N.m for short durations to eliminate turbo lag and seamlessly manage engine start-stop cycles.
Things To Look Out For When Buying Used
- 48 V mild-hybrid battery failure: the EQ Boost system on the GLE 450 relies on a specialised 48 V battery that degrades rapidly if the vehicle sits idle.
- AIRMATIC suspension integrity: models equipped with the optional AIRMATIC air suspension are highly susceptible to leaking air struts or compressor burnout. Inspect the vehicle for an uneven ride height, a sagging stance after being parked overnight, or audible hissing from the wheel wells when the system primes.
- MBUX software instability: the heavily digitised cabin interface is prone to software anomalies. Early models exhibit freezing screens or unresponsive touch inputs. Ensure the firmware has been updated to the latest iteration by a franchised dealer to mitigate these bugs.
- Transmission hesitation: though generally solid, the nine-speed automatic gearbox can occasionally exhibit jerky, hesitant shifts in stop-and-go traffic.
- DPF and AdBlue sensor malfunctions: On the 300d and 400d derivatives, utilising the vehicle exclusively for short-distance urban commuting will clog the diesel particulate filter (DPF) and cause the AdBlue emissions sensors to fail; ultimately triggering a restrictive engine limp mode.
Which one to get
The Mercedes-Benz GLE 400d 4MATIC emerges as the undisputed optimal purchase. While the four-cylinder 300d is numerically adequate, a vehicle boasting a kerb weight exceeding 2 300 kg inherently requires the effortless, low-end rotational force that only a large-capacity straight-six diesel can consistently provide. The 2.9-litre engine delivers a monumental 700 N.m of torque, transforming high-speed overtaking and heavy towing into trivial exercises, all while maintaining superior real-world fuel economy compared to the mild-hybrid petrol models.
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