Engine oil specification and quantity is not provided. New vehicles did not come with a printed owners manual, and the online manual (July 2026 and Jan 2027 versions) do not specify what oil type to put in the vehicle. It is nowhere to be found in the owners documentation - at risk of putting the wrong oil in.
The worst 2027 Mercedes Benz GLS 450 4matic problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine1
Recalls
No recalls on record for this model year.
Technical service bulletins for the 2027 Mercedes Benz GLS 450 4matic 2
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
What 2027 Mercedes Benz GLS 450 4matic owners say
Most recent owner complaints, unedited.
Compare the 2027 Mercedes Benz GLS 450 4matic
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Questions about the 2027 Mercedes Benz GLS 450 4matic
Is the 2027 Mercedes Benz GLS 450 4matic reliable?
Owners have filed 1 complaint about the 2027 Mercedes Benz GLS 450 4matic, fewer than a typical GLS 450 4matic model year.
What is the most common problem with the 2027 Mercedes Benz GLS 450 4matic?
Engine and cooling, with 1 complaint.
How many recalls does the 2027 Mercedes Benz GLS 450 4matic have?
No recalls on record.
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