MERCEDES-BENZ GL (2006-09) GL420 5DR SUV 4.0 CDI AUTO

Buyer's Guide & Data from our Checks
The MERCEDES-BENZ GL (2006-09) GL420 5DR SUV 4.0 CDI AUTO is a large, luxury SUV that offers a commanding presence on UK roads. Known for its spacious interior and comfort, it is suited to families or those who need ample space for passengers and cargo. As a premium vehicle, it is often used for long-distance driving and leisure trips, making it ideal for those seeking a blend of style, practicality, and comfort. This model sits within the SUV market segment and is recognized for its robust build and smooth automatic transmission, which enhances the driving experience.
Data from mycarcheck.com covers around 673 checks, with a wide variety of distinct VINs—the highest sample size in its class—indicating steady interest and reliable resale data for this particular model. The average valuation of about £5,600 and a typical mileage of 126,000 miles suggest it remains a popular choice among used luxury SUVs. The number of previous keepers, averaging nearly five, reflects its long-term ownership potential and durability.
What makes the MERCEDES-BENZ GL (2006-09) GL420 5DR SUV 4.0 CDI AUTO notable is its reputation for luxury and reliability in a competitive class. It offers a refined driving experience, coupled with Mercedes’ renowned build quality. When compared to rivals, it is often praised for its comfort, versatility, and strong engine performance. This vehicle appeals to buyers looking for a spacious, dependable SUV that combines luxury with practicality for everyday and leisure use.
Key Findings
The following statistics are drawn from our checks of 263 different vehicles, run between February 18th 2021 and December 31st 2025. These real-world insights provide context for this vehicle's place in the market, as well as its typical usage.
673
Lookups
Lookups
74
Hidden Histories
Hidden Histories
138k
Average Mileage
Average Mileage
£5,600
Average Valuation
Average Valuation












