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 a 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.