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The Mercedes-Benz CLK feels right in just about any role. It's good looking, stylish, sporty to drive and personal, yet it will work for two couples during an evening on the town. Those who prefer understated, buttoned-down elegance will like CLK Coupe. Extroverts and sun worshippers can choose the one-button convertible top on the CLK Cabriolet.
For 2007, the V8-powered CLKs have new engines. The CLK550 gets the latest-generation Mercedes V8, with variable valve timing and 27 percent more power than the engine in the 2006 CLK500, yet the same EPA mileage ratings as before. The new CLK63 AMG has a race-inspired V8 built start-to-finish by one technician at the company's AMG high-performance subsidiary.
The new engines mean a slight change in model nomenclature, but the CLK lineup really has not changed. There's still a coupe and convertible, with either a V6 or V8 engine. The super-fast AMG model is available only as a convertible.
The CLK has rear-wheel drive in a class increasingly populated by front-wheel-drive and all-wheel-drive cars, and it has a sporting flair some mid-size luxury cars lack. In general, the CLK is one of the sportiest cars in the Mercedes lineup. Most buyers will be quite happy with the CLK350 and its 268-horsepower V6. With its seven-speed automatic, the CLK350 delivers a fine balance of spirited acceleration, quiet cruising and decent fuel mileage.
Drivers who demand more performance can choose the CLK550. Its new V8 generates 382 hp and an even more impressive 391 pound-feet of torque. (Torque is that force that launches the car from intersections and propels it up hills.) Measured by acceleration and engine response, the CLK550 meets just about any standard of high performance. The CLK550 transmits a feeling of being more stuck to the road than the CLK350 does, with sharper handling and better high-speed stability.
The limited-production CLK63 AMG goes a couple of magnitudes better. It will out-accelerate, out-brake and out-corner all but a handful of four-place cars anywhere. Yet around town it's incredibly docile and belies its 475-hp AMG engine.
On the open road, the CLK, no matter the model, is satisfying, responsive and exceptionally stable at high speeds. It inspires confidence on twisty roads and bears up well in a spirited drive. It's also easy to live with. Its ride is firm, but not intrusive. Its relatively small size makes it easy to park and maneuver in crowded city centers, but its back seat is roomy enough for two adults.
In a word, the CLK is balanced. Its stylish design and elegant interior make it a pleasant place to spend time, and it delivers Mercedes cachet that works in almost any circumstance.
The Mercedes-Benz CLK is available as a coupe or convertible. Three models are distinguished by engine size, and all come with a seven-speed automatic transmission that can be shifted manually with buttons on the steering wheel.
The CLK350 Coupe ($46,200) and Cabriolet ($54,200) are powered by a 3.5-liter V6, which develops 268 horsepower and 258 pound-feet of torque.
Standard features include leather upholstery, dual-zone climate control with pollen and dust filter, 10-way adjustable power seats with three memory settings and rain-sensing windshield wipers. Black-stained ash wood trim is standard, and more traditional burl walnut is available as a no-charge option. The Cabriolet features a fully automatic, heavily insulated convertible top.
The CLK550 Coupe ($54,900) and Cabriolet ($62,900) get the new-generation V8 introduced in the big S-Class sedan. This dual-overhead-cam 5.5-liter engine generates 382 horsepower and 391 pound-feet of torque.
The CLK63 AMG ($89,200) is available only as a cabriolet. Its 6.2-iter V8 is built by a single technician at Mercedes' AMG racing subsidiary, with 475 horsepower and 465 pound-feet of torque. The CLK63 also gets sporting upgrades to its brakes and suspension, and comes with a longer list of ultra-luxury features.
Options are grouped in three packages: Premium I, II, and III. Exact content and price vary with the model. On the CLK350 Coupe, Premium I ($2,530) includes auto-dimming mirrors, a programmable built-in garage door opener, a premium harmon/kardon stereo with six-CD changer and a glass sunroof. Premium II ($3,630) adds turning bi-xenon headlights with washers and a heated windshield washer system. Premium III ($4630) includes everything in PI and PII, plus ventilated seats.
Stand-alone options include a navigation system combined with on-screen control for the stereo and air conditioning ($2,270); Sirius satellite radio ($510); hands-free telephone communication ($925); wood and leather steering wheel ($540); heated front seats ($700); electronic trunk closer ($520); and Keyless Go push-button starting ($1,100). For that extra special touch, designo Silver Edition and Graphite Edition trim packages are available ($7,050).
Safety features that come on all CLKs include multi-stage front-impact airbags. Coupes get front passenger side-impact airbags that protect the torso, and curtain-style head protection airbags for both front and rear passengers. The convertibles combine both torso and head protection in the same side-impact airbags. The also feature pop-up rollbars that automatically deploy if the electronics sense a pending rollover. TeleAid accident notification is standard. Side-impact airbags for the rear passengers are optional ($390). Anti-lock brakes (ABS) with emergency Brake Assist and Electronic Stability Control are standard. The Extended Mobility package ($200) includes run-flat tires and a tire pressure warning system. 4Matic all-wheel drive adds a measure of safety in slippery conditions.
The Mercedes-Benz CLK is beautiful, no arguing that, and its beauty lies in its symmetry and balance. The CLK looks forceful, but also elegant and sophisticated, and it blends form and function nicely. Under the rear half of its sweeping roofline is a back seat with room for two adults, not the parcel shelf that passes for a seat in some high-end coupes.
The CLK is a fairly compact car, based on a lengthened version of the same chassis used for the small Mercedes C-Class sedans. Yet the designers have successfully infused it with the presence and bearing of a much larger coupe like the big Mercedes CL.
The coupe aesthetic starts with the profile. The CLK dispenses with a center roof pillar, so the roof sweeps uninterrupted from the base of the windshield to the trunk lid. The rear windows lower completely below the sill, emphasizing the smooth, open flow, and the effect is enhanced by the absence of any visible antenna for the radio, telephone or navigation system. The CLK replaces a conventional steel trunk lid with a composite panel that allows the antennas to be imbedded the lid's structure.
The second, unmistakable coupe element is the CLK's front end. This Mercedes forgoes the traditional hood ornament in favor of a lower, much larger three-pointed star embedded in the wide, three-slat grille, which greets the world with just a hint of a sneer. On first impression, it seems the CLK has four headlights, but a closer look confirms a single ellipse-shaped cluster on each side. And there's more to the headlights than slick design. The optional bi-xenon lights swivel to point into curves and are equipped with high-pressure washing jets; they also change beam angle as the CLK moves up and down with road imperfections, keeping the high-intensity light below the sight line of the drivers in oncoming cars.
When its fabric top is closed, the CLK Cabriolet is nearly identical in silhouette to the coupe, with only a hint of a break in the roofline where it meets the trunk lid. The fabric top is fully lined and insulated, and opening or closing it is a one-button operation. Roughly 30 seconds after the driver hits the button, the top tucks neatly under a hard cover behind the rear seats. Rollover protection hoops are integrated in the rear-seat headrests, allowing the same clean look when the top is down. In the event of an imminent collision or rollover in the cabriolet, two roll bars deploy and lock in place within 0.3 seconds.
Details distinguish the CLK models. The CLK350 has neutral-tinted glass and gray vanes in its grille, while the CLK550 gets blue-tinted glass, high-gloss black vanes with chrome trim on the grille, and a short rear spoiler. The hotrod CLK63 AMG sports a front valance with three separate sections, mesh grillwork and flared rocker panels between the wheels.
The CLK350 and CLK550 come with 17-inch wheels, slightly wider with fatter tires in back, to create the staggered-wheel look of a race car. The wheels on the CLK350 are a light-alloy five-spoke design. Those on the CLK550 feature an AMG-styled monoblock design. The CLK63 AMG has 18-inch wheels in a highly polished double-spoke pattern with lower profile Z-rated tires.
What's New for 2007: The optional Sport Appearance Package for the CLK350 is easy to spot, thanks to unique 10-spoke aluminum wheels. This option includes a sports suspension that lowers the CLK slightly, and cross-drilled brake rotors that are visible through the wheels. The brake calipers are painted with Mercedes script.
The Mercedes-Benz CLK is a fairly compact car, but there is enough space and seat adjustment inside to accommodate very tall people in front. Generally, the cabin has the look and feel of success.
While we've had quibbles with the fit and finish inside some Mercedes models the last several years, those don't apply in the CLK. Materials are very good throughout. Soft polyurethane sprayed onto the dashboard provides an attractive appearance and a luxurious feel. Black-stained ash wood trim and black carpet is standard, though traditional burl walnut is available at no charge. Nice touches of wood and gathered leather on the door panels make for a very attractive cabin.
When front passengers close the doors, an electric arm on each side of the CLK extends to present the seatbelts, making it easier to reach the belts. The belt presenters retract once the belts are buckled. It works well, though we've seen passengers startled by them, fearing the return of the motorized mouse.
Most controls and switches, including climate adjustments and audio, are stacked in the center of the dash above the console. They're easy to locate and big enough to adjust without a lot of concentration. Standard features include digital dual-zone temperature control with a sun sensor to optimize air distribution. The rain-sensing wipers are operated with a stalk on the right side of the steering column.
Storage options have improved by Mercedes standards, but come up short when compared with other cars. The two-tiered glove box is large, but the optional CD changer will take up one of the shelves. The center console has two cup holders and a storage bin.
The gauge cluster is a mix of traditional analog gauges and LED graphics. A large round speedometer and tachometer dominate the center, flanked by two smaller, thermometer-like gauges for the fuel level and coolant temperature. It's both attractive and effective, with crisp illuminated script that's easy to read at a glance, though at first you may confuse full and empty on the gas gauge.
The CLK steering wheel is one of our favorites: just the right size, thickness and firmness for this car, and power-adjustable for tilt and reach. Rocker buttons on its spokes allow operation of several systems, including stereo, climate and telephone.
These buttons also manage an LED information display in the center of the gauges. There's a wealth of information available, including trip functions such as average speed and distance to empty, but it takes a bit of concentration to scroll through and find what you're looking for.
Access to the rear seats is easier than it is in many coupes, but that's mostly because there is more room than in many coupes. The front seats help by tipping and sliding forward with a quick-release lever. If the front passengers don't have their seats moved too far rearward, there's enough room for two adults in back. At least for traveling to dinner and a show, if not a cross country trek.
The rear seat folds down with 60/40 split, and that's good. With 10.4 cubic feet of space in the trunk, the CLK will hold a load of luggage for two, but its trunk is smaller than typical in a sedan of its size. The fold-flat rear seat helps a bit with oversized items.
You won't lose much rear seat space with the CLK Cabriolet, but you will lose a lot of storage in the trunk, even when the convertible top is up. With the top up, there's enough space for four to six bags of groceries. When the top is down, it cuts the trunk space almost in half. Nonetheless, the top is thickly insulated and beautifully lined, and it's almost as pristinely quiet in the CLK Cabriolet as it is in the coupe, when the top is up.
What's New for 2007: Interior features and options are essentially unchanged on V6 and V8 models.
Once underway, the Mercedes-Benz CLK offers a balance of virtues. It's luxurious and comfortable, but also energetic.
Its rigid structure contributes to its smooth, quiet operation, lack of vibration, and balance of ride quality and handling capability. A rigid chassis does not mean a stiff ride, however.
The CLK suspension absorbs bumps without fanfare. The only disturbance comes from the crack of tires over potholes, and it's heard more than felt. The CLK is comfortable, but not numbing, so the steering feeds good information back to the driver about how well the front tires are gripping.
This balance of smoothness and road feel means you might be driving the CLK harder than you realize in fairly short order. When the straight, flat roads of the city give way to twisty two-lanes in the hills and countryside, the coupe handles curves with the grace of a thoroughbred. It maintains a nice, flat attitude through sweeping bends and won't bob or weave with frequent application of the brakes.
We like the way Mercedes has refined its electronic stability program, which can help the driver maintain control by reducing skidding. In the CLK, the system is virtually transparent, intervening unobtrusively to prevent wheel spin, but without the heavy-handed reduction in power that marred some of its early applications.
Engine performance is satisfying in all models. The 268-hp V6 in the CLK350 has all the power most drivers need, accelerating with authority from a stoplight and moving the car smoothly through the gears. Acceleration times for the V6 match those for the typical V8-powered luxury car of the late 1990s, and there's a reserve of power that makes passing on two-lane roads a stress-free process.
Nonetheless, the new 5.5-liter V8 in the CLK550 is a significant, noticeable step up, from both the CLK350 and the previous CLK500 models. With 382 horsepower and nearly 400 pound-feet of torque, acceleration here is thrilling. Capable of accelerating from 0 to 60 mph in just 5.1 seconds, the CLK550 is high performance by nearly any definition. Slam the accelerator at any speed and what follows, almost instantaneously, is a satisfying, muted growl from the exhaust and a whoosh of speed.
Both the CLK350 and CLK550 are equipped with the seven-speed automatic, and we like this transmission. Beyond the extra gears, its control program works better than that on the Mercedes automatics of previous years. This one doesn't slack off when you need it most, kicking down to a lower gear fast, sometimes three gears at once, if you slam the accelerator hard. Alternate shift buttons, which allow selection of a specific gear, are located on the back of the steering wheel hub, right where fingers wrap around the spokes. The touch-shift manual mode works nicely.
The AMG model also gets a seven-speed automatic, labeled the AMG Speedshift 7G-Tronic. Its internal parts are beefed up to reduce shift times in manual mode and handle the power generated by the CLK63 AMG V8 engine (465 pound-feet of torque). Previously powered by a 5.5-liter V8, the previous AMG CLK was merely fast. With the 6.3-liter engine and seven-speed automatic, it's blindingly quick. Throttle response is instantaneous, automatic downshifts nearly so, and the manual control electronics are better programmed to hold a gear near the engine's redline, allowing high-rev, low-gear driving enthusiast drivers enjoy.
The CLK63 AMG we tested had a fluttering sound in the idle that was a bit annoying by Mercedes standards, but when we recalled it was a 475-hp engine, practically a race motor, it seemed a little less so.
The CLK Cabriolet AMG was already one of the most drivable cars in Mercedes' inventory, and with the new engine it's more so. It's not equipped with the Active Body Control or variable air suspension used on Mercedes ultra-luxury models, just good suspension tuning, good steering feel and crisp turn-in. Some Merce
The Mercedes-Benz CLK is a rare blend of style, luxury and sporty driving performance. It's elegant, tasteful and engaging inside and out, and its design should wear well with time. There's room inside for two couples during an evening out. Both the coupe and convertible will work as all-season cars in most locales. The V6-powered CLK350 will satisfy most owners, while the CLK550 V8 delivers high performance by nearly any measure. The CLK63 AMG is strictly for enthusiast drivers. The CLK550 so good in most respects that those less committed are not likely to appreciate what the CLK63 adds for its $26,000 price premium.
NewCarTestDrive.com correspondent Tom Lankard filed this report from Santa Barbara, California; with Mitch McCullough reporting from Los Angeles, and J.P. Vettraino in Detroit.