2020 Mercedes A-Class vs. 2020 Infiniti Q50

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-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. 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. 6IUEX-0KENZ 45.55.47.189 2020/02/18

For enhanced safety, the front and rear seat shoulder belts of the Mercedes A-Class 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 Infiniti Q50 doesn’t offer pretensioners for the rear seat belts.

The A-Class’ driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Q50 doesn’t offer a driver alert monitor.

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

Warranty

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There are over 79 percent more Mercedes dealers than there are Infiniti dealers, which makes it much easier should you ever need service under the A-Class’ warranty.

Reliability

© 1999 - 2020 Advanta-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. 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. 6IUEX-0KENZ 45.55.47.189 2020/02/18

J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Infiniti vehicles. J.D. Power ranks Mercedes 12th in initial quality. With 7 more problems per 100 vehicles, Infiniti is ranked 19th.

Fuel Economy and Range

© 1999 - 2020 Advanta-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. 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. 6IUEX-0KENZ 45.55.47.189 2020/02/18

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

A-Class

Q50

2WD

2.0 turbo 4 cyl./7-Spd. Auto

24 city/35 hwy

20 city/29 hwy

3.0 V6/Auto

n/a

20 city/26 hwy

3.0 V6/Auto

AWD

2.0 turbo 4 cyl./7-Spd. Auto

24 city/34 hwy

19 city/27 hwy

3.0 V6/Auto

n/a

19 city/26 hwy

3.0 V6/Auto

Environmental Friendliness

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes A-Class higher (5 out of 10) than the Infiniti Q50 (3). This means the A-Class produces up to 16.5 pounds less smog-producing pollutants than the Q50 every 15,000 miles.

Transmission

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The A-Class offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The Q50 doesn’t offer an SMG or a conventional manual transmission.

Brakes and Stopping

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The A-Class stops much shorter than the Q50:

A-Class

Q50

70 to 0 MPH

153 feet

165 feet

Car and Driver

Suspension and Handling

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For better handling and stability, the track (width between the wheels) on the A-Class is 1.1 inches wider in the front than the average track on the Q50.

The A 220 4MATIC handles at .95 G’s, while the Q50 Red Sport 400 pulls only .88 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the A-Class’ turning circle is .6 feet tighter than the Q50’s (36.1 feet vs. 36.7 feet). The A-Class’ turning circle is 1.3 feet tighter than the Q50 AWD’s (36.1 feet vs. 37.4 feet).

Chassis

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The Mercedes A-Class may be more efficient, handle and accelerate better because it weighs about 400 to 600 pounds less than the Infiniti Q50.

The A-Class is 10.5 inches shorter than the Q50, making the A-Class easier to handle, maneuver and park in tight spaces.

Cargo Capacity

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The A-Class’ standard rear seats fold to accommodate long and bulky cargo. The Q50 Pure doesn’t offer folding rear seats, only a ski pass-through.

To make loading groceries and cargo easier when your hands are full, the A-Class’ available trunk can be opened just by kicking your foot under the back bumper, leaving your hands completely free. The Q50 doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.

Ergonomics

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Unlike the driver-only memory system in the Q50 Sport/Red Sport 400, the A-Class has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The A-Class offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Q50 doesn’t offer a heads-up display.

The A-Class’ power parking brake sets with one touch and releases with one touch or automatically. The Q50’s parking brake has to released manually.

The power windows standard on both the A-Class and the Q50 have locks to prevent small children from operating them. When the lock on the A-Class is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Q50 prevents the driver from operating the other windows just as it does the other passengers.

Optional air-conditioned seats in the A-Class keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The Q50 doesn’t offer air-conditioned seats.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes A-Class offers an optional wireless phone charging system (Qi) in the center console. The Q50 doesn’t offer wireless personal charging.

The A-Class’ optional Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The Q50 doesn’t offer an automated parking system.

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