2021 Mercedes-Benz GLS 400d 3000cc

Pros

• Luxurious interior
• Strong diesel engine
• Spacious 7-seater
• Advanced safety features
• Excellent off-road capability

Cons

• High maintenance costs
• Complex electronics prone to issues
• Expensive genuine parts
• Thirsty in urban conditions
• Large size can be cumbersome in tight spaces

Reliability

The GLS 400d is generally reliable, with its OM656 engine known for durability. However, high mileage can lead to issues with the air suspension system and electronic components, which are common in luxury vehicles. Regular maintenance is key to longevity.

Maintenance

Maintenance of the GLS 400d requires attention to detail, particularly with its complex air suspension and electronics. Service intervals are typically every 10,000 km, and while costs are higher than average, they are expected for a luxury SUV of this caliber. The automatic transmission is robust but benefits from timely fluid changes.

Parts availability

Parts for the GLS 400d are available through Mercedes-Benz's authorized service network in Kenya, particularly in Nairobi and Mombasa. While genuine parts are costly, they are essential for maintaining performance and reliability. Some aftermarket options exist but should be chosen carefully to avoid compatibility issues.

Fuel economy

The GLS 400d's 3.0L diesel engine is relatively frugal for its size, especially on highways, thanks to its efficient turbocharging. However, expect higher fuel consumption in Nairobi's stop-and-go traffic, where its weight and power can lead to thirstier performance.