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For enhanced safety, the front and rear seat shoulder belts of the Mercedes E-Class Sedan 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 Cadillac CT6 doesn’t offer pretensioners for the rear seat belts.
The rear seatbelts optional on the E-Class Sedan inflate when a collision is detected, helping to spread crash forces over a much larger area of the body and limiting head and neck movement. This can help prevent spinal and internal injuries. The CT6 doesn’t offer inflatable seatbelts.
The E-Class Sedan’s 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 CT6 doesn’t offer a driver alert monitor.
Both the E-Class Sedan and the CT6 have standard driver and passenger frontal airbags, front side-impact airbags, driver knee 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, daytime running lights, blind spot warning systems, rearview cameras, available lane departure warning systems, around view monitors and rear cross-path warning.
For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard front crash prevention system, and its headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the E-Class Sedan its highest rating: “Top Pick Plus” for 2019, a rating granted to only 55 vehicles tested by the IIHS. The CT6 has not been tested, yet.
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 E-Class Sedan’s reliability 19 points higher than the CT6.
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 Cadillac vehicles. J.D. Power ranks Mercedes 12th in initial quality. With 6 more problems per 100 vehicles, Cadillac is ranked 17th.
J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Mercedes vehicles are more reliable than Cadillac vehicles. J.D. Power ranks Mercedes 13th in reliability, above the industry average. With 32 more problems per 100 vehicles, Cadillac is ranked 23rd.
From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Mercedes vehicles are more reliable than Cadillac vehicles. Consumer Reports ranks Mercedes 11 places higher in reliability than Cadillac.
The E 450 4MATIC Sedan’s standard 3.0 turbo V6 produces 27 more horsepower (362 vs. 335) and 84 lbs.-ft. more torque (369 vs. 285) than the CT6’s standard 3.6 DOHC V6.
On the EPA test cycle the E 350 Sedan 4MATIC gets better fuel mileage than the CT6 V6 (22 city/30 hwy vs. 18 city/27 hwy).
Regenerative brakes improve the E-Class Sedan 53 AMG’s fuel efficiency by converting inertia back into energy instead of wasting it. The CT6 doesn’t offer a regenerative braking system.
The E-Class Sedan 450/AMG 53’s standard fuel tank has 1.9 gallons more fuel capacity than the CT6 (21.1 vs. 19.2 gallons).
The E-Class Sedan’s optional 275/35R19 rear tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the CT6 Premium Luxury/Platinum’s 40 series tires.
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the E-Class Sedan can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The CT6 doesn’t offer run-flat tires.
The E-Class Sedan has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The E-Class Sedan’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The CT6 doesn’t offer a load leveling suspension.
For better maneuverability, the E-Class Sedan’s turning circle is 1.9 feet tighter than the CT6’s (38.1 feet vs. 40 feet). The E 450 4MATIC Sedan’s turning circle is 1 foot tighter than the CT6’s (39 feet vs. 40 feet).
The Mercedes E-Class Sedan may be more efficient, handle and accelerate better because it weighs about 250 to 500 pounds less than the Cadillac CT6.
The E-Class Sedan is 12 inches shorter than the CT6, making the E-Class Sedan easier to handle, maneuver and park in tight spaces.
The E-Class Sedan has .2 inches more rear headroom and .9 inches more rear shoulder room than the CT6.
A low lift-over trunk design makes loading and unloading the E-Class Sedan easier. The E-Class Sedan’s trunk lift-over height is 27.7 inches, while the CT6’s liftover is 29.1 inches.
The E-Class Sedan’s standard rear seats fold to accommodate long and bulky cargo. The CT6 doesn’t offer folding rear seats, only a ski pass-through.
Heated windshield washer fluid is standard on the E-Class Sedan to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The CT6 doesn’t offer heated windshield washer fluid.
The CT6 Premium Luxury/Platinum’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The E-Class Sedan’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.
The E-Class Sedan 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 CT6 doesn’t offer a house-current electrical outlet.
The Mercedes E-Class comes in coupe, convertible, sedan and station wagon bodystyles; the Cadillac CT6 isn’t available as a coupe, convertible or station wagon.
The E-Class Sedan is available in both rear-wheel drive and all-wheel drive configurations. The CT6 doesn’t offer a two-wheel drive configuration.
According to The Car Book by Jack Gillis, the E-Class Sedan is less expensive to operate than the CT6 because it costs $164 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost less on the E-Class Sedan than the CT6, including $125 less for front brake pads, $59 less for fuel injection, $79 less for a fuel pump and $56 less for front struts.
The E 450/E 53 was chosen as one of Car and Driver’s “Top Ten” for 2 of the last 2 years. The CT6 has never been a Car and Driver “Top Ten” pick.
The Mercedes E-Class outsold the Cadillac CT6 by over five to one during the 2019 model year.
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