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Compare the2018 Infiniti Q50VS 2018 Mercedes E-Class Sedan

2018 Infiniti Q50
2018 Mercedes E-Class Sedan

Safety

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Over 200 people are killed each year when backed over by motor vehicles. The Q50 (except Pure) offers optional Back-up Collision Intervention which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The E-Class Sedan doesn’t offer backup collision prevention brakes.

Both the Q50 and the E-Class Sedan have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available all-wheel drive, crash mitigating brakes, lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.

Warranty

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The Q50 comes with a full 4-year/60,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The E-Class Sedan’s 4-year/50,000-mile basic warranty expires 10,000 miles sooner.

Infiniti’s powertrain warranty covers the Q50 2 years and 20,000 miles longer than Mercedes covers the E-Class Sedan. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the E-Class Sedan ends after only 4 years or 50,000 miles.

The Q50’s corrosion warranty is 2 years longer than the E-Class Sedan’s (7 vs. 5 years).

Reliability

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J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Infiniti vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Infiniti fourth in reliability, above the industry average. With 27 more problems per 100 vehicles, Mercedes is ranked 15th.

From surveys of all its subscribers, Consumer Reports’ April 2018 Auto Issue reports that Infiniti vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Infiniti 7 places higher in reliability than Mercedes.

Engine

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The Q50 Red Sport 400’s 3.0 turbo V6 produces 4 more horsepower (400 vs. 396) than the AMG E 43 Sedan’s optional 3.0 turbo V6.

As tested in Consumer Reports the Q50 3.0t 3.0 turbo V6 is faster than the E 300 Sedan 2.0 turbo 4 cyl.:

 

Q50

E-Class Sedan

Zero to 30 MPH

2.4 sec

2.8 sec

Zero to 60 MPH

5.7 sec

7.1 sec

45 to 65 MPH Passing

4.2 sec

4.7 sec

Quarter Mile

14.2 sec

15.6 sec

Speed in 1/4 Mile

103 MPH

93 MPH

As tested in Car and Driver the Q50 Red Sport 400 3.0 turbo V6 is faster than the E 300 Sedan 2.0 turbo 4 cyl.:

 

Q50

E-Class Sedan

Zero to 60 MPH

4.5 sec

6.5 sec

Zero to 100 MPH

10.5 sec

17.7 sec

5 to 60 MPH Rolling Start

5 sec

7.3 sec

Quarter Mile

13 sec

15 sec

Speed in 1/4 Mile

112 MPH

92 MPH

Top Speed

153 MPH

153 MPH

Fuel Economy and Range

© 1999 - 2026Advanta-STAR Automotive Research, all rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America (Advanta-STAR). If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it, or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. Removal of this watermark/notification without prior written license and approval received from Advanta-STAR is an agreement, understanding, and/or stipulation by the person(s), entities, agents, attorneys, and any other persons involved in the removal of this watermark/notification (including but not limited to Search Optics, LLC and any and all parent entities, sister entities, and subsidiary entities of Search Optics, LLC and/or any other entity, agent, attorney, and persons related in any manner to Search Optics, LLC) to: 1) an agreed upon amount of liquidated monetary damages of a minimum of $1,250,000.00 US Dollars in favor of Advanta-STAR; 2) the jurisdiction and enforcement of any legal claims associated with this matter asserted by Advanta-STAR in the United States Federal District Court in Portand, Oregon; and 3) service of process of any legal claims asserted by Advanta-STAR associated with this matter may be accomplished by First-Class Postage by the United States Postal Service or comparable service. XPYNN-M34HG 2a06:98c0:3600::103 2026/04/06

On the EPA test cycle the Q50 Hybrid gets better fuel mileage than the E-Class Sedan:

 

 

Q50

E-Class Sedan

 

RWD

3.5 V6/Auto

27 city/32 hwy

22 city/30 hwy

2.0 4 cyl./Auto

AWD

3.5 V6/Auto

26 city/30 hwy

21 city/29 hwy

2.0 4 cyl./Auto

On the EPA test cycle the Q50 gets better fuel mileage than the E-Class Sedan:

 

 

Q50

E-Class Sedan

 

RWD

2.0 4 cyl./Auto

23 city/30 hwy

22 city/30 hwy

2.0 4 cyl./Auto

AWD

3.0 twin turbo V6/Auto

19 city/26 hwy

19 city/25 hwy

3.0 V6/Auto

Regenerative brakes improve the Q50 Hybrid’s fuel efficiency by converting inertia back into energy instead of wasting it. The E-Class Sedan doesn’t offer a regenerative braking system.

Brakes and Stopping

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The Q50 stops shorter than the E-Class Sedan:

 

Q50

E-Class Sedan

 

70 to 0 MPH

156 feet

161 feet

Car and Driver

60 to 0 MPH

108 feet

110 feet

Motor Trend

60 to 0 MPH (Wet)

131 feet

143 feet

Consumer Reports

Suspension and Handling

© 1999 - 2026Advanta-STAR Automotive Research, all rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America (Advanta-STAR). If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it, or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. Removal of this watermark/notification without prior written license and approval received from Advanta-STAR is an agreement, understanding, and/or stipulation by the person(s), entities, agents, attorneys, and any other persons involved in the removal of this watermark/notification (including but not limited to Search Optics, LLC and any and all parent entities, sister entities, and subsidiary entities of Search Optics, LLC and/or any other entity, agent, attorney, and persons related in any manner to Search Optics, LLC) to: 1) an agreed upon amount of liquidated monetary damages of a minimum of $1,250,000.00 US Dollars in favor of Advanta-STAR; 2) the jurisdiction and enforcement of any legal claims associated with this matter asserted by Advanta-STAR in the United States Federal District Court in Portand, Oregon; and 3) service of process of any legal claims asserted by Advanta-STAR associated with this matter may be accomplished by First-Class Postage by the United States Postal Service or comparable service. XPYNN-M34HG 2a06:98c0:3600::103 2026/04/06

The Q50 handles at .95 G’s, while the E 300 Sedan 4MATIC pulls only .90 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the Q50’s turning circle is 1.4 feet tighter than the E-Class Sedan’s (36.7 feet vs. 38.1 feet). The Q50 AWD’s turning circle is .7 feet tighter than the E-Class Sedan’s (37.4 feet vs. 38.1 feet).

Chassis

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The Q50 is 4.2 inches shorter than the E-Class Sedan, making the Q50 easier to handle, maneuver and park in tight spaces.

The Q50 Hybrid uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The E-Class Sedan doesn’t offer active noise cancellation.

Passenger Space

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The Q50 has 3.5 cubic feet more passenger volume than the E-Class Sedan (101.5 vs. 98).

Servicing Ease

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J.D. Power and Associates surveys of service recipients show that Infiniti service is better than Mercedes. J.D. Power ranks Infiniti first in service department satisfaction. With a 8% lower rating, Mercedes is ranked 6th.

Ergonomics

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Consumer Reports rated the Q50’s headlight performance “Good,” a higher rating than the E-Class Sedan’s headlights, which were rated “Poor.”

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Q50 has standard extendable sun visors. The E-Class Sedan doesn’t offer extendable visors.

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