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.
2027 Mercedes-Benz GLS 450 4Matic
Routine
Owners filed 1 complaints about this vehicle with federal regulators, most often about the engine. No safety recall has been issued.
Most common 2027 Mercedes-Benz GLS 450 4Matic problems
1 of the 1 complaints (100%) are about the engine.
| Component | Reports | Crashes | Fires | Injuries | |
|---|---|---|---|---|---|
| Engine | 1 | 0 | 0 | 0 |
What owners reported
Newest filingsEngine
Filed Oct 26, 2026GA
All 1 complaints, reproduced as filed.
Reading this record
No unusual pattern of severe incidents in the complaint record.
Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.
Most recent recall on file: none. Source: NHTSA Office of Defects Investigation.