The MERCEDES-BENZ GLS (2015-19) GLS350 4MATIC 5DR SUV 3.0D V6 DPFR SS 258 EU6 AMG LINE 9G-T AUTO is a large, premium seven-seat SUV, sitting near the top of the UK family-car market. It combines imposing road presence with Mercedes comfort and four-wheel drive, offering a more luxurious alternative to mainstream SUVs. Mycarcheck.com recorded 1,581 checks covering 611 different vehicles, a substantial sample of buyer interest. Checked examples averaged 49,000 miles and around 9,000 miles a year, with 1.4 previous keepers; the average private-sale valuation was £35,400. These figures offer useful context, though an individual car’s history and condition matter more. The GLS350 suits families needing generous space, long-distance comfort and a confident drive in poor weather, as well as executives wanting a refined everyday vehicle. AMG Line styling gives it a sportier look, while its smooth diesel power and automatic gearbox make journeys relaxed. Against rivals such as the BMW X5 and Audi Q7, it stands out for its size, presence and plush feel overall.