by Frank A. Aukofer

With convertibles shrinking in number and their owners becoming older and richer, it’s no surprise that Mercedes-Benz continues to field models like the 2018 E400 4MATIC Cabriolet.

This E400, a classy and expensive boulevardier with all-weather all-wheel-drive capability, is marketed as a midsize car alongside its E-Class coupe, sedan, station wagon and crossover SUV garage-mates. But it is more of a sports car in concept and size.

Though two inches shy of 16 feet long, its interior volume — the way the U.S. government classifies automobiles — is just a touch shy of the compact definition, so it dips just barely into the subcompact category.

_F8A9252-1200x800To qualify as a compact, a car must have 100 to 109 cubic feet of interior volume, which includes both the passenger and trunk space. The E400 has 89.9 cubic feet of passenger room, most of it up front, where the total is 55.2 cubic feet. The back seat has 34.7 cubic feet.

The trunk’s capacity is 9.5 cubic feet, which puts the total interior volume at 99.4 cubic feet. And that’s as good as it gets with the top up. If you lower the beautifully upholstered and finished soft top, an expansion boot drops into the trunk area to accommodate the folded top and robs the trunk of about one-third of its space.

Two adults can sit in the back seat if the folks up front co-operate by moving their seats forward. But it’s very tight and crawling back there takes some athletic ability. The motorized right front seat automatically moves forward to ease access when you tilt the seatback, then reverses back into place.

_F8A9893-1200x794So, the conclusion is that the E400 Cabriolet works better as a conveyance for two people, who can use the back seats for some of their luggage, especially handy if they want to enjoy top-down motoring. It also likely should see some open car parade duty with a Santa Claus or congressman perched on the boot with feet planted on the back seat.

The Cabriolet’s elegant touches include gorgeous natural grain light brown elm wood trim and a headliner so deftly padded that the interior looks and feels like a coupe. Sumptuous perforated leather upholstery and the Mercedes air curtain that warms necks through the front seat headrests contribute to the luxury ambiance.

_F8A9921-1200x800The test car came with a so-called AMG Line appearance package that mimics some of the styling and other visual touches of the Mercedes higher performance AMG models.

Other standard comfort and convenience items include dual-zone automatic climate control, pushbutton starting, navigation system, Apple CarPlay and Android Auto, power front seats with lumbar support and memory, and a12-inch touch screen for audio, navigation and other functions.

As with many of these sophisticated infotainment functions, the Mercedes COMAND (Cockpit Management and Data) system requires a bit of learning because it is not intuitive. It’s best to take time to read the owner’s manual or get lessons from experts at the dealership.

_F8A9928-1200x788With all the luxury touches, this convertible also has some sports car moves. It is powered by a 329-hp 3.0-liter V6 engine with twin turbochargers that makes 354 lb-ft of torque, which Mercedes says enables it to accelerate to 60 mph in 5.3 seconds.

The power goes to all four wheels through a nine-speed automatic transmission that can be shifted manually with paddles mounted on the steering wheel. It shifts smoothly for the most part but is prone to occasional hiccups at lower speeds.

There are driver-selectable driving modes that provide adjustments for ride, transmission shifting and throttle response. Of those, the Sport Plus mode is biased toward handling, delivering a tauter ride.

_F8A9277-1200x800This is a Mercedes-Benz, after all, so don’t expect any bargains. Where the South Korean and some other manufacturers make a lot of desirable equipment standard, on the E400 Cabrio much is optional, including the Cardinal Red Metallic paint job at $1,000 extra.

The same goes for the $9,350 Premium 3 package, which includes adaptive cruise control and active assists for steering, lane keeping, blind spot warning and automatic emergency braking. Also in the package are a stop-start system, Burmaster premium surround-sound audio system, SXM satellite radio, inductive wireless charging, adaptive headlight assist and even systems to purify inside air and inject gaseous fragrances.

Options totaled $14,930, which brought the base of $69,795 up to the tested price of $84,725. Nice work if you can afford it.

_F8A8510-1200x833Specifications:

  • Model: 2018 Mercedes-Benz E400 4MATIC two-door convertible.
  • Engine:0-liter V6, twin turbochargers, 329 hp, 354 lb-ft of torque.
  • Transmission: Nine-speed automatic with manual-shift mode and all-wheel drive.
  • Overall length: 15 feet 10 inches.
  • EPA passenger/trunk volume: 90 and 10 cubic feet.
  • Weight: 4,332 pounds.
  • EPA city/highway/combined fuel consumption: 20/25/22 mpg.
  • Base price, including destination charge: $69,795.
  • Price as tested: $84,725.

Disclaimer: The manufacturer provided the vehicle used to conduct this test drive and review.

_F8A9750-1200x800Photos (c) Mercedes-Benz.