2020 Mercedes-Benz Gls450 4matic

SUV Premium
Mercedes-Benz Gls450 4matic 2020
21MPG Combined
1 Trim
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Updated February 27, 2026

Get the full picture on the 2020 Mercedes-Benz Gls450 4matic. As a SUV, it achieves 21 combined MPG and has not yet been rated by NHTSA. Below you’ll find detailed specs for every trim, plus recall information and competitor comparisons.

2020 Mercedes-Benz Gls450 4matic Specifications

SpecValue
Combined MPG21 combined MPG
City MPG19
Highway MPG23
Body StyleSUV
Fuel TypePremium
Drive4WD
Available Trims1

Annual Fuel Cost

Based on EPA estimates, the 2020 Mercedes-Benz Gls450 4matic costs approximately $2,800 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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