2019 Chevrolet Impala vs. 2019 Mercedes C-Class Sedan

Detailed Review, Specifications & Comparison

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Safety

For enhanced safety, the front shoulder belts of the Chevrolet Impala are height-adjustable, and the rear seat shoulder belts have child comfort guides to move the belt to properly fit children. A better fit can prevent injuries and the increased comfort also encourages children to buckle up. The Mercedes C-Class Sedan has only front height-adjustable seat belts.

Both the Impala and C-Class Sedan have child safety locks to prevent children from opening the rear doors. The Impala has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The C-Class Sedan’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

Both the Impala and the C-Class Sedan have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available crash mitigating brakes, lane departure warning systems, blind spot warning systems, rear parking sensors and rear cross-path warning.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Chevrolet Impala is safer than the Mercedes C-Class Sedan:

 

Impala

C-Class Sedan

OVERALL STARS

5 Stars

4 Stars

 

Driver

STARS

5 Stars

5 Stars

Neck Injury Risk

23.3%

24%

Neck Stress

184 lbs.

203 lbs.

Neck Compression

30 lbs.

62 lbs.

Leg Forces (l/r)

270/69 lbs.

421/449 lbs.

 

Passenger

STARS

4 Stars

4 Stars

Chest Compression

.4 inches

.6 inches

Neck Injury Risk

36.3%

60%

Neck Stress

132 lbs.

147 lbs.

Neck Compression

97 lbs.

219 lbs.

Leg Forces (l/r)

57/21 lbs.

311/161 lbs.

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Chevrolet Impala is safer than the Mercedes C-Class Sedan:

 

Impala

C-Class Sedan

 

Rear Seat

STARS

5 Stars

4 Stars

HIC

150

459

Spine Acceleration

40 G’s

67 G’s

Hip Force

855 lbs.

949 lbs.

 

Into Pole

STARS

5 Stars

5 Stars

Spine Acceleration

38 G’s

43 G’s

Hip Force

551 lbs.

769 lbs.

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

Warranty

Chevrolet’s powertrain warranty covers the Impala 1 year and 10,000 miles longer than Mercedes covers the C-Class Sedan. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 5 years or 60,000 miles. Coverage on the C-Class Sedan ends after only 4 years or 50,000 miles.

The Impala’s corrosion warranty is 1 year longer than the C-Class Sedan’s (6 vs. 5 years).

Chevrolet pays for the first scheduled maintenance on the Impala. Chevrolet will pay for the first oil change, lubrication and any other required maintenance in the first year. Mercedes doesn’t pay scheduled maintenance for the C-Class Sedan.

There are almost 8 times as many Chevrolet dealers as there are Mercedes dealers, which makes it much easier should you ever need service under the Impala’s warranty.

Reliability

The Impala has a standard “limp home system” to keep drivers from being stranded if most or all of the engine’s coolant is lost. The engine will run on only half of its cylinders at a time, reduce its power and light a warning lamp on the dashboard so the driver can get to a service station for repairs. The C-Class Sedan doesn’t offer a lost coolant limp home mode, so a coolant leak could strand you or seriously damage the car’s engine.

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the Impala’s reliability 29 points higher than the C-Class Sedan.

J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Chevrolet vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks Chevrolet 6th in initial quality, above the industry average. With 10 more problems per 100 vehicles, Mercedes is ranked 14th.

J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Chevrolet vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Chevrolet 6th in reliability, above the industry average. With 23 more problems per 100 vehicles, Mercedes is ranked 15th.

Engine

The Impala’s optional 3.6 DOHC V6 produces 50 more horsepower (305 vs. 255) than the C 300 Sedan’s standard 2.0 turbo 4 cyl.

Fuel Economy and Range

To lower fuel costs and make buying fuel easier, the Chevrolet Impala uses regular unleaded gasoline. The C-Class Sedan requires premium, which can cost 20 to 55 cents more per gallon.

The Impala has 1.1 gallons more fuel capacity than the C-Class Sedan (18.5 vs. 17.4 gallons), for longer range between fill-ups.

Environmental Friendliness

The U.S. Environmental Protection Agency (EPA) certifies the Chevrolet Impala as a “Partial Zero Emissions Vehicle” (PZEV). The Mercedes C-Class Sedan is only certified to “Ultra Low Emissions Vehicle” (ULEV) standards.

Tires and Wheels

For better traction, the Impala has larger standard tires than the C-Class Sedan (235/50R18 vs. 225/50R17). The Impala’s optional tires are larger than the largest tires available on the C-Class Sedan (245/45R19 vs. 225/40R19).

For better ride, handling and brake cooling the Impala has standard 18-inch wheels. Smaller 17-inch wheels are standard on the C-Class Sedan. The Impala Premier’s optional 20-inch wheels are larger than the 19-inch wheels optional on the C-Class Sedan.

The Impala has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the C-Class Sedan; it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed. Some models of the C-Class Sedan don’t even offer run-flats.

Suspension and Handling

For better handling and stability, the track (width between the wheels) on the Impala is .2 inches wider in the front and 1.1 inches wider in the rear than the average track on the C-Class Sedan.

Chassis

To almost totally eliminate engine vibration in the passenger area, the Impala has liquid-filled engine mounts. The liquid helps further dampen engine harshness. The C-Class Sedan uses conventional solid rubber engine mounts.

The Impala 4 cyl. uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The C-Class Sedan doesn’t offer active noise cancellation.

Passenger Space

Because it has more passenger and cargo room, the EPA rates the Impala a Large car, while the C-Class Sedan is rated a Compact.

The Impala has 15 cubic feet more passenger volume than the C-Class Sedan (105 vs. 90).

The Impala has 2.8 inches more front headroom, 4.1 inches more front legroom, 2.6 inches more front shoulder room, .3 inches more rear headroom, 4.6 inches more rear legroom and 1.9 inches more rear shoulder room than the C-Class Sedan.

Cargo Capacity

The Impala has a much larger trunk than the C-Class Sedan (18.8 vs. 12.6 cubic feet).

Towing

The Impala has a 1000 lbs. towing capacity. The C-Class Sedan has no towing capacity.

Ergonomics

The Impala offers an optional 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The C-Class Sedan doesn’t offer a house-current electrical outlet.

Economic Advantages

According to The Car Book by Jack Gillis, the Impala is less expensive to operate than the C-Class Sedan because it costs $36 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the Impala than the C-Class Sedan, including $172 less for a water pump, $309 less for a muffler, $156 less for a starter, $339 less for a fuel pump, $218 less for front struts and $360 less for a power steering pump.

Recommendations

Consumer Reports® chose the Chevrolet Impala as its “Top Pick,” the highest scoring vehicle in its category, based on reliability, safety and performance.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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