Review: 2023 Mercedes-Benz GLS 450d (367 Hp) Mild Hybrid 4MATIC 9G-TRONIC

Explore the features and capabilities of the 2023 Mercedes-Benz GLS 450d, a luxury SUV designed for versatility and performance.

Olivia Harper | Feb 28, 2025 | 8 minutes
Review: 2023 Mercedes-Benz GLS 450d (367 Hp) Mild Hybrid 4MATIC 9G-TRONIC

The 2023 Mercedes-Benz GLS 450d is a luxury SUV that combines elegance with power, offering a smooth ride and advanced technology. As a mild hybrid, it provides a balance between performance and efficiency, making it a compelling choice for those seeking a versatile vehicle. Whether you're navigating city streets or embarking on long road trips, the GLS 450d is designed to meet a variety of needs.

Understanding Key Terms

Before diving into the specifics, let's clarify some essential terms:

  • Mild Hybrid Electric Vehicle (MHEV): This type of vehicle uses a small electric motor to assist the internal combustion engine, improving fuel efficiency and reducing emissions.
  • 4MATIC: Mercedes-Benz's all-wheel-drive system, providing enhanced traction and stability.
  • 9G-TRONIC: A nine-speed automatic transmission that offers smooth and efficient gear changes.

Main Features of the 2023 Mercedes-Benz GLS 450d

The GLS 450d is equipped with a 367 horsepower engine, supported by a 48-volt mild hybrid system. This setup not only boosts performance but also aids in fuel efficiency, with a combined consumption of 8-9.1 liters per 100 kilometers (29.4 - 25.85 US mpg). The SUV can accelerate from 0 to 100 km/h in just 6.1 seconds, showcasing its impressive power.

With a spacious interior that seats up to seven passengers, the GLS 450d is perfect for families. The trunk space ranges from 355 liters to a massive 2400 liters, accommodating everything from groceries to luggage for a long trip. The vehicle's dimensions, including a length of 5209 mm and a wheelbase of 3135 mm, ensure ample room for comfort.

Safety and technology are at the forefront, with features like ABS (Anti-lock Braking System) and electric power steering. The air suspension system provides a smooth ride, while the all-wheel-drive ensures stability across various terrains.

Suitability for Different Lifestyles

The GLS 450d is versatile, making it suitable for various purposes:

  • City Driving: Despite its size, the GLS 450d's advanced steering and suspension systems make it manageable in urban environments. However, its large dimensions might pose challenges in tight parking spaces.
  • Long-Distance Travel: With a fuel tank capacity of 90 liters and comfortable seating, this SUV is ideal for road trips. The mild hybrid system enhances fuel efficiency, reducing the need for frequent stops.
  • Family Use: The spacious interior and safety features make it a great choice for families. The large trunk space is perfect for carrying sports equipment or strollers.
  • Adventure Lifestyles: The all-wheel-drive system and high ground clearance (up to 290 mm) make it capable of handling off-road conditions, though it's more suited for light adventures rather than extreme off-roading.

Strengths and Weaknesses

Here's a quick look at the strengths and weaknesses of the GLS 450d:

  • Strengths:
    • Powerful engine with mild hybrid efficiency
    • Spacious and luxurious interior
    • Advanced safety and technology features
  • Weaknesses:
    • Large size can be challenging in tight urban spaces
    • Higher CO2 emissions compared to smaller vehicles

Conclusion

The 2023 Mercedes-Benz GLS 450d is a well-rounded luxury SUV that excels in performance, comfort, and technology. It's particularly well-suited for families and those who enjoy long-distance travel. While its size may be a drawback in urban settings, its overall capabilities make it a strong contender in the luxury SUV market.

Think about what features matter most to you. Do you need extra cargo space or advanced safety features? The GLS 450d might just be the perfect fit for your lifestyle.

Specifications Table

AttributeDetails
GenerationGLS (X167, facelift 2023)
Modification (Engine)GLS 450d (367 Hp) Mild Hybrid 4MATIC 9G-TRONIC
Powertrain ArchitectureMHEV
Body TypeSUV
Seats7
Doors5
Combined Fuel Consumption8-9.1 l/100 km
CO2 Emissions219-240 g/km
Fuel TypeDiesel
Acceleration (0-100 km/h)6.1 sec
Maximum Speed250 km/h
Emission StandardEuro 6e
Battery Voltage48 V
Battery TechnologyLithium-ion (Li-Ion)
Electric Motor Power20 Hp
Electric Motor Torque200 Nm
Engine Displacement2989 cm3
Number of Cylinders6
Engine ConfigurationInline
Power Output367 Hp
Torque750 Nm
Compression Ratio15.5:1
Fuel Injection SystemDiesel Commonrail
Engine AspirationBiTurbo, Intercooler
Kerb Weight2540 kg
Max Load760 kg
Trunk Space (Minimum and Maximum)355 l - 2400 l
Fuel Tank Capacity90 l
Length5209 mm
Width1956 mm
Height1828-1928 mm
Wheelbase3135 mm
Drive Wheel SystemAll wheel drive (4x4)
Number of Gears (Transmission Type)9 gears, automatic transmission G-TRONIC
Front SuspensionHydro-pneumatic element, Double wishbone, Air suspension
Rear SuspensionHydro-pneumatic element, Independent multi-link suspension, Air suspension
Front BrakesVentilated discs
Rear BrakesVentilated discs
Assisting SystemsABS (Anti-lock braking system)
Power SteeringElectric Steering
Tire SizeFront: 275/50 R20; Rear: 275/50 R20
Wheel Rims Size20; 21; 22; 23
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