Test Drive: 2010 Mercedes-Benz E550 Coupe

The Incredible Lightness of B Pillar

Vehicle Tested: 2010 Mercedes-Benz E-Class E550 2dr Coupe (5.5L 8cyl 7A)
Pros: B-pillarless design reaps many benefits, lavish cabin, impeccable engineering, comfortable and quiet ride, quiet but exciting V8.
Cons: Tight rear headroom, longish stopping distances, leisurely shifting transmission.

Looming bluffs, the salty brine of ocean air, a winding road and the luscious sound of a buttery V8. A convertible may be the first thought for use in this auto paradise, but sunburns are bad news. So a better choice might be a classic hardtop like the 2010 Mercedes-Benz E550 Coupe — a regal piece of luxury engineering notable as much for what it lacks (B-pillars) as what it possesses. Power down the windows, slide back the sunshade of the tinted panoramic sunroof and experience motoring as it was meant to be enjoyed.

If all of this seems a tad romantic, that's because the E-Class coupe is just the sort of automobile you'd fall in love with and keep for 25 years. It certainly feels like it's built to last that long, with the same sort of impenetrable thunk when opening the door handle as the tanklike S-Class sedan or tank-literal G-Class SUV.

Cruising over choppy pavement reveals a peerless ride usually associated with a vehicle that weighs 6,000 pounds, yet it takes corners like the lighter thoroughbred luxury coupe it is. As its name would indicate, the E550 coupe is a new two-door version of Mercedes' venerable E-Class. It's meant to replace the now discontinued CLK-Class — in presence, in prestige, in luxury — yet it costs about $2,000 less than the CLK550.

Based on a mechanical soup of the E-Class sedan and some C-Class bits, the E-Class coupe features the engines and sheer presence of the former, while sharing the more nimble road manners of the latter. The Audi S5 and BMW M3 are right in the price neighborhood, but each represents an escalating degree of sport tuning that along with the E550 provides coupe buyers with distinct flavors of driving — Lux, Sport and Macho. The BMW 6 Series and Jaguar XK may compete in size, luxury and prestige, but cost about $20,000 more.

So you won't find an apples-to-apples rival for the 2010 Mercedes E550 Coupe, but when the sun is shining through the glass roof and the wind is whisking through the open windows, you'll be perfectly content that rivals were absent.

  • 2010 Mercedes-Benz E550 Coupe

    The sun is shining, the V8 is humming, what a life.
    (photo by: Kurt Niebuhr)

  • 2010 Mercedes-Benz E550 Coupe - Seat

    Lacking B-pillars means less noise and buffeting, a cleaner profile and easier rear-seat entry.
    (photo by: Kurt Niebuhr)

  • 2010 Mercedes-Benz E550 Coupe - Rear

    You'll be sad when you actually have to roll up the windows in the E550. Motoring as it should be.
    (photo by: Kurt Niebuhr)

Performance

As is typical for Mercedes-Benz, the E550's 5.5-liter V8 is one of refinement and civility. The noises it produces are a distant, dampened burble, yet it masks a generous wallop of effortless punch. With 382 horsepower and 391 pound-feet of torque sent to the rear wheels via a leisurely shifting seven-speed auto, the 0-60 sprint takes only 5.3 seconds, which is pretty much equal to a manual-equipped Audi S5. Going the other way on the track produced less impressive results, with a longish (for this class) 130 feet required to stop from 60 mph.

On those gently winding coastal roads, the E550 is in its element. The steering is on the light side, but it's linear and subtly responsive in a way that requires a delicate touch to appreciate. Should that gentle winding become seriously bendy, you'll notice more body roll than is present in its sharper competitors, but at least the E's motions are fluid and predictable at a reasonable speed.

The E550 can go quickly when pushed, but it ultimately encourages a more leisurely pace, as if saying "Why so fast, buddy? Why not roll down the windows and enjoy the world?" Should you be perpetually in a hurry, the S5 is probably the better way to go. Should you perpetually need to get there with the rear end in a smoky drift, go with the M3.

Comfort

The front seats? Divine. They provide 12 different adjustments for the driver and 10 for the passenger, while adding adjustable bolsters and two different areas of lumbar support. They're firm, supportive and conducive to sudden impulse drives to Florida. The twin bucket backseats? Like Cleveland, they're relatively easy to get to, but you don't really want to go there in the first place.

Rear legroom is tighter than in the S5, and headroom requires occupants to be 5-foot-7 or shorter to ride. There's also no center armrest, but at least the lack of a B-pillar (the center roof pillar normally just aft of the driver's shoulder) and self-returning front seats make getting back there relatively simple.

The cabin is suitably quiet, providing a pleasant cocoon to enjoy the (optional) Harman Kardon stereo. Scoring more points for the E550's lack of a B-pillar, wind buffeting and noise is greatly reduced when the windows are lowered. Cruising at between 50 and 60 mph yields a pleasing waft of air through the cabin that no other coupe in this price range can match.

Function

A relatively tall green house and (sorry to mention it again) no B-pillars create an airy cabin that's easy to see out of. Big mirrors, adaptive bi-xenon headlights and an optional back-up camera make the world behind and beside you that much more transparent.

The cabin controls are virtually identical to those in the E-Class sedan, with the lone exception being a traditional gear shifter in place of an electronic column stalk. The climate controls consist of large toggles and corresponding LCD displays directly above them that make adjustments quick and easy at a glance.

The stereo and other controls are a bit more complicated, and our test car came with the optional COMAND electronics interface. It works pretty well at corralling the car's various functions, and the latest generation's combination of physical dash buttons, steering wheel controls and multifunction knob make the system vastly better than earlier incarnations. The iPod interface, in particular, works quite well.

As far as luxury coupes go, the E550 offers a commendable amount of storage space. The glovebox and center console compartment are quite large, and the cupholders are roomy enough for medium-size beverages. The trunk is even more impressive, providing enough room for a large suitcase and a golf bag widthwise. If you need more room, the 60/40-split rear seats easily flip forward with the pull of two handles mounted in the trunk.

A coupe is usually not the first automotive choice for parents, but whaddaya know, having no B-pillars helps them, too. Lower the back window and finagling a child seat is all of a sudden pretty easy rather than a body-bending activity better suited for Nastia Liukin.

Design/Fit and Finish

Mercedes-Benz has recently transitioned from a more Italian, organic interior design to one more indicative of the blocky, carved-from-stone designs of its past. To our eyes, it works. Materials are first-rate and subtle details like the automated arm that hands you your seatbelt or the chrome plate that lines the inner door edge go that extra distance to make your vehicle purchase seem a bit more special.

On the outside, the E550 manages to be sexy and sophisticated in a more angular, aggressive manner than the softer, more feminine CLK. The four oval lights within the corner airdams are a bit odd (they look like front-mounted exhausts) and the rear quarter window breaks up the hardtop look a little, but in general this is a very handsome car.

Who Should Consider This Vehicle

The E550 is a classic example of a luxury coupe, one for those more interested in a refined ride and a subdued driving character than all-out performance and handling. Should you be the reverse of that, we suggest looking at the Audi S5 or BMW M3. We'd also recommend taking the V6-powered E350 coupe for a spin, as it's plenty powerful and offers all the luxuries of the V8 model.

Others to Consider
Audi S5, BMW M3, Mercedes-Benz E350.

The manufacturer provided Edmunds this vehicle for the purposes of evaluation.

Model Year
2010
Make
Mercedes-Benz
Model
E-Class
Style
2dr Coupe
Base Price
$55,525
Price as Tested
$62,945
Options on Test Vehicle
Premium 1 Package ($3,950 – includes COMAND navigation, real-time traffic, voice commands, Harman Kardon surround-sound stereo, 6 gigabytes of digital music storage, satellite radio, iPod interface, HD radio, rearview camera, heated front seats, power rear sunshade); Leather Upholstery ($1,350); Metallic Paint ($720); TeleAid ($650).
Drive Type
Rear wheel drive
Transmission Type
7-speed Automatic
Transmission and Axle Ratio (x:1)
I: 4.337, II: 2.859, III: 1.921, IV: 1.368, V: 1.00, VI: 0.82, VII: 0.728, R:3.416; FD: 2.65:1
Engine Type
V8
Displacement (cc / cu-in)
5461cc (333cu-in)
Block/Head Material
Aluminum/aluminum
Valvetrain
Double overhead camshaft, 4 valves per cylinder, variable valve timing
Compression Ratio
10.7
Redline (rpm)
6,500
Horsepower (hp @ rpm)
382 @ 6,000
Torque (lb-ft @ rpm)
391 @ 2,800
Brake Type (front)
13.5-in ventilated disc
Brake Type (rear)
11.8-in ventilated disc
Steering System
Speed-proportional power steering
Steering Ratio
13.7
Suspension Type (front)
Independent, Multi-Link, Coil Springs, and Stabilizer Bar
Suspension Type (rear)
Independent, MacPherson Struts, Coil Springs, Lower Control Arms, and Stabilizer Bar
Tire Size (front)
P235/40R18
Tire Size (rear)
P255/35R18
Tire Brand
Pirelli
Tire Model
P Zero Nero All-Season
Tire Type
All season
Wheel Size
18 X 8.0 front - 18 X 8.5 rear
Wheel Material (front/rear)
Cast-aluminum
Manufacturer Curb Weight (lb)
3,783
Curb Weight As Tested (lb)
3,883
Weight Distribution, F/R (%)
52.8/47.2
Recommended Fuel
Premium unleaded (required)
Fuel Tank Capacity (gal)
17.4
EPA Fuel Economy (mpg)
15 City/23 Highway
Edmunds Observed (mpg)
16.2

Testing Conditions

Temperature (Fahrenheit)
92
Humidity
19%
Elevation (ft)
1,121
Wind
3.5

Performance

0 - 30 (sec)
2.2
0 - 45 (sec)
3.6
0 - 60 (sec)
5.3
0 - 75 (sec)
7.9
1/4 Mile (sec @ mph)
13.7 @ 104.0
0-60 with 1-ft Rollout (sec)
5.0
30 - 0 (ft)
32
60 - 0 (ft)
130
Braking Rating
Very Good
Slalom (mph)
60.4 TC/STAB on; 60.6 TC/STAB off
Skid Pad Leteral acceleration (g)
0.83 Trac/STAB on; 0.83 Trac/STAB off
Handling Rating
Good
Db @ Idle
44.7
Db @ Full Throttle
70.4
Db @ 70 mph Cruise
60.6

Tester Comments

Acceleration Comments
Really stumbles off the line due to major intervention from traction control. Disengagement still leaves safety net. It'll allow about 2 seconds of wheelspin, then puts an end to it. Best run made in Manual mode (which shifts automatically at redline), with virtually no wheelspin. Ultra-smooth upshifts and a somewhat mellow engine note. Quicker than a Camaro SS to 60 mph!!
Braking Comments
Medium-to-firm pedal effort with virtually no hum or vibration from ABS. Car stays very level -- no dive, especially in Sport mode. Very good fade resistance.
Handling Comments
Skid pad: Very well balanced on the skid pad with only minor throttle adjustments needed to alter course when the stability control is disengaged. Once stability control active, the throttle closes a little earlier but not enough to change results. Slalom: Very frustrating car because it understeers past a cone, and then when you try to catch up by dialing in more steering, the rear lets go. Classic pushy-loose handling syndrome. With this car, it's generally a good idea that the stability control is never fully disengaged even when it's switched off.

Specifications

Length (in)
185.0
Width (in)
70.3
Height (in)
54.0
Wheelbase (in)
108.7
Front Track (in)
60.5
Rear Track (in)
60.8
Turning Circle (ft)
35.3
Legroom, rear (in)
32.9
Headroom, front (in)
40.2
Headroom, rear (in)
35.8
Shoulder Room, front (in)
54.1
Shoulder Room, rear (in)
48.9
Maximum Seating Capacity
4
Cargo Volume (cu-ft)
15.9

Warranty

Bumper-to-Bumper
4 years / 50,000 miles
Power Train
4 years / 50,000 miles
Corrosion
4 years / 50,000 miles
Roadside Assistance
Unlimited
Scheduled Maintenance
3,000 miles

Safety

Front Airbags
Standard
Side Airbags
Standard dual front and dual rear
Head Airbags
Standard front and rear
Knee Airbags
Driver only
Antilock Brakes
4-wheel ABS
Electronic Brake Enhancements
Braking assist, electronic brakeforce distribution
Traction Control
Standard
Stability Control
Standard
Rollover Protection
Standard
Tire Pressure Monitoring System
Tire-pressure monitoring
Emergency Assistance System
Blind spot and lane departure warnings, pre-collision safety system
NHTSA Crash Test Driver
Not available
NHTSA Crash Test Passenger
Not available
NHTSA Crash Test Side Front
Not available
NHTSA Crash Test Side Rear
Not available
NHTSA Rollover
Not available
IIHS Offset
Not available

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