2019 Mercedes E-Class Wagon vs. 2019 Buick Regal TourX

Detailed Review, Specifications & Comparison

Your buying experience includes...

business_centerProfessional Staff
account_balanceSimple Financing
local_gas_stationFull Tank of Gas
local_car_washFree Car Wash


For enhanced safety, the front and middle seat shoulder belts of the Mercedes E-Class Wagon 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 Buick Regal TourX doesn’t offer pretensioners for the middle seat belts.

The E-Class Wagon’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Regal TourX doesn’t offer pre-crash pretensioners.

The E-Class Wagon offers an optional Surround View System to allow the driver to see objects all around the vehicle on a screen. The Regal TourX only offers a rear monitor and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the front or sides.

The E-Class Wagon’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 Regal TourX doesn’t offer a driver alert monitor.

Both the E-Class Wagon and the Regal TourX have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available lane departure warning systems, blind spot warning systems and rear cross-path warning.

The Mercedes E-Class Wagon weighs 450 to 591 pounds more than the Buick Regal TourX. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.


J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Buick vehicles. J.D. Power ranks Mercedes 14th in initial quality, above the industry average. With 3 more problems per 100 vehicles, Buick is ranked 16th, below the industry average.


The E-Class Wagon’s 3.0 turbo V6 produces 112 more horsepower (362 vs. 250) and 74 lbs.-ft. more torque (369 vs. 295) than the Regal TourX’s 2.0 turbo 4 cyl.

Fuel Economy and Range

The E-Class Wagon has 4.8 gallons more fuel capacity than the Regal TourX (21.1 vs. 16.3 gallons), for longer range between fill-ups.


A nine-speed automatic is standard on the Mercedes E-Class Wagon, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Regal TourX.

Brakes and Stopping

For better stopping power the E-Class Wagon’s brake rotors are larger than those on the Regal TourX:




Front Rotors

14.2 inches

12.6 inches

Rear Rotors

14.2 inches

11.3 inches

The E-Class Wagon’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the Regal TourX are solid, not vented.

The E-Class Wagon stops much shorter than the Regal TourX:





70 to 0 MPH

156 feet

175 feet

Car and Driver

60 to 0 MPH

108 feet

118 feet

Motor Trend

Tires and Wheels

For better traction, the E-Class Wagon has larger standard tires than the Regal TourX (245/45R18 vs. 235/50R18). The E-Class Wagon’s optional tires are larger than the largest tires available on the Regal TourX (F:245/45R18 & R:275/40R18 vs. 235/50R18).

The E-Class Wagon’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the Regal TourX’s standard 50 series tires. The E-Class Wagon’s optional tires have a lower 40 series profile than the Regal TourX’s 50 series tires.

For better ride, handling and brake cooling the E-Class Wagon offers optional 19-inch wheels. The Regal TourX’s largest wheels are only 18-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the E-Class Wagon can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Regal TourX doesn’t offer run-flat tires.

Suspension and Handling

The E-Class Wagon offers an available driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The Regal TourX’s suspension doesn’t offer adjustable shock absorbers.

The E-Class Wagon 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 Wagon’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 Regal TourX doesn’t offer a load leveling suspension.

The E-Class Wagon’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The Regal TourX doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the E-Class Wagon’s wheelbase is 4.3 inches longer than on the Regal TourX (115.7 inches vs. 111.4 inches).

The E-Class Wagon’s front to rear weight distribution is more even (51.7% to 48.3%) than the Regal TourX’s (58.2% to 41.8%). This gives the E-Class Wagon more stable handling and braking.

The E 400 4MATIC Wagon handles at .87 G’s, while the Regal TourX Essence pulls only .80 G’s of cornering force in a Car and Driver skidpad test.

The E 400 4MATIC Wagon executes Motor Trend’s “Figure Eight” maneuver quicker than the Regal TourX Essence (25.7 seconds @ .73 average G’s vs. 26.2 seconds @ .69 average G’s).

For better maneuverability, the E-Class Wagon’s turning circle is 1 foot tighter than the Regal TourX’s (39 feet vs. 40 feet).

Passenger Space

The E-Class Wagon has standard seating for 7 passengers; the Regal TourX can only carry 5.

The E-Class Wagon has .9 inches more front shoulder room and 1.7 inches more rear shoulder room than the Regal TourX.

Cargo Capacity

The E-Class Wagon’s cargo area provides more volume than the Regal TourX.



Regal TourX

Third Seat Removed

35 cubic feet

32.7 cubic feet

Pressing a switch automatically lowers the E-Class Wagon’s second row seats, to make changing between passengers and cargo easier. The Regal TourX doesn’t offer automatic folding seats.

A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the E-Class Wagon. The Regal TourX doesn’t offer locking storage for small valuables.

Servicing Ease

The engine in the E-Class Wagon is mounted longitudinally (North-South), instead of sideways, as in the Regal TourX. This makes it easier to service and maintain, because the accessory belts are in front.

J.D. Power and Associates surveys of service recipients show that Mercedes service is better than Buick. J.D. Power ranks Mercedes 6th in service department satisfaction (above the industry average). With a 18% lower rating, Buick is ranked 9th.


Unlike the driver-only memory seat and mirrors optional at extra cost in the Regal TourX Essence, the E-Class Wagon has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The E-Class Wagon’s standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. An easy entry system costs extra on the Regal TourX, and is not available on all models.

The E-Class Wagon offers an optional heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Regal TourX doesn’t offer a heads-up display.

The E-Class Wagon’s front and rear power windows all open or close with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The Regal TourX’s rear power window switches have to be held the entire time to close them fully.

If the windows are left open on the E-Class Wagon the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Regal TourX can only operate the windows from inside the vehicle, with the ignition on.

The E-Class Wagon’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The Regal TourX’s manually variable intermittent wipers have to be constantly adjusted.

Heated windshield washer fluid is standard on the E-Class Wagon to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The Regal TourX doesn’t offer heated windshield washer fluid.

While driving with high beams on, sensitive light sensors available for the E-Class Wagon detect other vehicles which could be blinded and automatically switch to low beams. The Regal TourX doesn’t offer automatic dimming high beams.

The Regal TourX Preferred/Essence’s optional cornering lamps activate a lamp on the front corner when the turn signal is activated. The E-Class Wagon’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.

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

The E-Class Wagon has a standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. Dual zone air conditioning is only available on the Regal TourX Essence.

The E-Class Wagon 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 Regal TourX doesn’t offer a house-current electrical outlet.

The E-Class Wagon’s optional Active Parking Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The Regal TourX doesn’t offer an automated parking system.

Model Availability

The Mercedes E-Class comes in coupe, convertible, sedan and station wagon bodystyles; the Buick Regal isn’t available as a coupe or convertible.

Economic Advantages

The E-Class Wagon will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the E-Class Wagon will retain 46.92% of its original price after five years, while the Regal TourX only retains 43.22% to 43.51%.


The Mercedes E-Class outsold the Buick Regal by over three to one during the 2018 model year.

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

How much is your car worth?

Get the best value for your car from an Asbury dealership.

Featured Videos