Detailed item info Model OverviewThe SLK300 has a 3. 0L V6 under its long. sloped hood. while the SLK350 has a 3. 5L V6. As one might surmise. the extra half-liter in an otherwise identical car makes a big difference. The 228-hp SLK300 with a 6-speed manual can reach 60 mph from a standstill in 6. 1 seconds. while the 300-hp SLK350 with a 7-speed automatic does the same feat in only 5. 4 seconds. All SLK-Class models have anti-lock brakes. electronic brake assist. traction control and the electronic stability program. which measures steering wheel angle and direction. yaw rate. wheel speed and lateral acceleration. The automatic transmission. standard on the SLK350 and optional on the SLK300. will adapt to the driver's style to deliver the most fitting performance level. Front and side airbags are standard. plus side guard door beams and integrated rollover protection. Mercedes-Benz packed a lot of features into the small roadster package. not least of which is the self-stowing electronically operated hard top. which tucks into the trunk. Power-operated everything comes standard. as do a leather steering wheel. leather seats. dual-zone climate controls and a 9-speaker stereo system. Mercedes-Benz even managed to find room to squeeze in two cup holders. The vehicle telematics system includes emergency notification in the event of an accident. roadside assistance and remote door unlocking. This service is free for the first 12 months of SLK-Class ownership. Several packages are available. including the Premium Package. which features power seats and steering column with memory. rain-sensing wipers and premium interior lighting. The Sport Package adds a sport suspension. paddle shifters and 18-inch AMG wheels. while a Multimedia Package includes hard-drive navigation. an in-dash 6-disc CD/DVD changer. SIRIUS satellite radio and a 6. 5-inch LCD display.