Mercedes Benz GLS 450 4MATIC vs Saturn Relay
Both cars' complete complaint records, side by side.
Read the totals carefully. NHTSA publishes no sales figures, so the car that sold more collects more complaints regardless of quality. The rows worth weighing are the proportions — the share of complaints that involved harm, and which part dominates.
| Measure | Mercedes Benz GLS 450 4MATIC | Saturn Relay |
|---|---|---|
| Complaints on file | 77 | 190 |
| Model years covered | 2022–2025 | 2005–2007 |
| Worst model year | 2022 | 2005 |
| Best model year | 2023 | 2007 |
| Crashes reported | 18 | 5 |
| Fires reported | 1 | 1 |
| Injuries reported | 4 | 3 |
| Deaths reported | 0 | 0 |
| Most complained-about part | Driver Assist & Collision Avoidance | Brakes |
| Share of complaints involving harm | 29.9% | 4.7% |
Mercedes Benz GLS 450 4MATIC by year
What breaks
Driver Assist & Collision Avoidance
17
22.1%
Electrical System
10
13.0%
Other & Unspecified
10
13.0%
Engine & Cooling
9
11.7%
Brakes
7
9.1%
Transmission & Drivetrain
4
5.2%
Wheels
4
5.2%
Acceleration & Cruise Control
3
3.9%
Saturn Relay by year
What breaks
Brakes
49
25.8%
Electrical System
30
15.8%
Body & Structure
19
10.0%
Doors, Latches & Locks
14
7.4%
Fuel & Propulsion
13
6.8%
Stability & Traction Control
13
6.8%
Transmission & Drivetrain
10
5.3%
Lights
10
5.3%