For enhanced safety, the front and rear seat shoulder belts of the Mercedes GLC have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Audi Q5 doesn’t offer pretensioners for its rear seat belts.
In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the GLC are reminded to check the back seat if they opened the rear door before starting out. The Q5 doesn’t offer a back seat reminder.
The Mercedes GLC has a standard driver’s side knee airbag mounted low on the dashboard. The knee airbag helps prevent the driver from sliding under the seatbelts or the main frontal airbag; this keeps the driver better positioned during a collision for maximum protection. A knee airbag also helps keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The Q5 doesn’t offer knee airbags.
The GLC has a standard front seat center airbag, which deploys between the driver and front passenger, protecting them from injuries caused by striking each other in serious side impacts. The Q5 doesn’t offer front seat center airbags.
The GLC has standard NECK-PRO front head restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the NECK-PRO front head restraints system moves the headrests forward to prevent neck and spine injuries. The Q5 doesn’t offer a whiplash protection system.
With its available Active Distance Assist Distronic, the Mercedes GLC is better at preventing collisions with pedestrians than the Audi Q5, according to the Insurance Institute for Highway Safety:
|
GLC |
Q5 |
Overall Evaluation |
GOOD |
MARGINAL |
|
Crossing Child - DAY |
|
12 MPH |
AVOIDED |
AVOIDED |
25 MPH |
AVOIDED |
-22 MPH |
|
Crossing Adult - NIGHT |
|
12 MPH Brights |
AVOIDED |
-8 MPH |
12 MPH Low beams |
AVOIDED |
-1 MPH |
25 MPH Brights |
AVOIDED |
-13 MPH |
25 MPH Low beams |
AVOIDED |
-2 MPH |
|
Parallel Adult - NIGHT |
|
25 MPH Brights |
AVOIDED |
-2 MPH |
25 MPH Low beams |
AVOIDED |
No Slowing |
37 MPH Brights |
AVOIDED |
No Slowing |
Warning Issued-Brights |
2.1 sec |
No Warning |
37 MPH Low beams |
-26 MPH |
No Slowing |
Warning Issued-Low beams |
1 sec |
No Warning |
Both the GLC and the Q5 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors, available all wheel drive, lane departure warning systems and around view monitors.
The Insurance Institute for Highway Safety does 40 MPH moderate front offset crash tests on new cars. In this updated test, results indicate that the GLC is much safer than the Q5:
|
GLC |
Q5 |
Overall Evaluation |
GOOD |
MARGINAL |
Structure |
GOOD |
GOOD |
|
Driver Injury Measures |
|
Head/Neck Rating |
GOOD |
GOOD |
Chest Rating |
GOOD |
GOOD |
Thigh/hip Rating |
GOOD |
GOOD |
Leg/foot Rating |
GOOD |
GOOD |
Restraints |
GOOD |
GOOD |
|
Rear Passenger Injury Measures |
|
Head/Neck Rating |
ACCEPTABLE |
ACCEPTABLE |
Chest Rating |
GOOD |
GOOD |
Thigh Rating |
GOOD |
GOOD |
Restraints |
ACCEPTABLE |
POOR |
Side impacts caused 23% of all road fatalities in 2018, down from 29% in 2003, when the Insurance Institute for Highway Safety introduced its side barrier test. In order to continue improving vehicle safety, the IIHS has started using a more severe side impact test: 37 MPH (up from 31 MPH), with a 4180-pound barrier (up from 3300 pounds). The results of this newly developed test demonstrates that the Mercedes GLC is safer than the Q5:
|
GLC |
Q5 |
Overall Evaluation |
GOOD |
ACCEPTABLE |
Structure |
GOOD |
GOOD |
|
Driver Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Neck Tension |
156 lbs. |
245 lbs. |
Neck Compression |
22 lbs. |
89 lbs. |
Torso |
GOOD |
GOOD |
Shoulder Deflection |
.55 in |
.71 in |
Torso Max Deflection |
.94 in |
.98 in |
Pelvis |
GOOD |
ACCEPTABLE |
Pelvis Force |
736 lbs. |
1116 lbs. |
Head Protection |
GOOD |
GOOD |
|
Passenger Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Head Injury Criterion |
240 |
346 |
Neck Tension |
112 lbs. |
223 lbs. |
Torso |
GOOD |
ACCEPTABLE |
Shoulder Deflection |
1.38 in |
1.73 in |
Shoulder Force |
67 lbs. |
402 lbs. |
Torso Max Deflection |
.98 in |
1.54 in |
Torso Deflection Rate |
7 MPH |
11 MPH |
Pelvis |
GOOD |
MARGINAL |
Pelvis Force |
558 lbs. |
1249 lbs. |
Head Protection |
GOOD |
GOOD |
The Mercedes GLC has achieved the Insurance Institute for Highway Safety’s (IIHS) highest rating of “Top Safety Pick Plus” for the 2024 model year. This distinction is based on its exceptional performance in IIHS’ rigorous battery of safety tests. Specifically, it earned a “Good” rating in the latest, more stringent moderate overlap front crash test, a “Good” result in the updated side impact test, and an “Acceptable” to “Good” score in the revised pedestrian crash prevention test. The Q5 was last only a “Top Safety Pick” in 2023 but no longer qualifies.