Mercedes-Benz SLK / SLC

59 sales analyzed · 22 topics from real Bring a Trailer & Cars & Bids comments.

“My Ferrari is a crazy hot chick. My SLK is ready on time to to go to dinner.”Toonces · Oct 13, 2022 at 8:47 AM

• Folding hardtop hydraulics: five cylinders, weak seals, Top Hydraulics fixmechanical
  The retractable hardtop is the SLK's defining feature and its most-discussed failure point. The R170 system uses five hydraulic cylinders whose factory seals are considered substandard; a leaking front latching solenoid can soak the (now-NLA) headliner in fluid. …
• Flaking rubberized soft-touch interior paint (R170)cosmetic
  A universally acknowledged R170 defect: the center console, glovebox, and door grab handles are coated in a rubberized soft-touch finish that chips and flakes with age. Owners consider it the car's biggest disappointment but note it is cosmetic and cheaply remedied with matching touch-up paint sold by the original German supplier (volico.de). …
• Supercharged M111 four-cylinder character (SLK230 Kompressor)driving
  The R170's supercharged 2.3L M111 four is the community's sentimental favorite for the chassis: 'agricultural' sounding but torquey, reliable, and reportedly good for well past 300k miles. Owners buy it for the blower and handling rather than refinement, noting the supercharged four fits the small roadster's mission perfectly. …
• Cam-adjuster solenoid leaking oil into the engine harnessmechanical
  A well-known R170 failure mode: the cam timing adjustment solenoid leaks oil into its plug, which is then forced up the wiring into the engine harness and eventually the ECU, requiring harness replacement. MB later offered a short pigtail/bypass to vent the oil harmlessly. …
• Cheap brake-light switch that triggers limp modebuying
  A recurring buyer-beware item: a $20 plastic brake-light switch under the pedal can fail from age or a panic stop, dropping the car into limp mode and forcing very low speeds. Owners advise keeping a spare in the glovebox; the fix is a cheap 10-minute DIY for the suitably contorted. …
• Manual transmissions: 5-speed, 6-speed, and the last manual MB in the USmarket
  Three-pedal SLKs are the enthusiast-preferred and strongest-selling variants. The R170 moved from a 5-speed (1999-2000) to a 6-speed in 2001; the V6 SLK350 6-speed is singled out as 'the one to own'; and the 2015 SLK250 is cited as the last manual Mercedes sold in the US. …
• Engine hierarchy: 230 vs 320 vs 32 AMGdriving
  Owners frame the R170 range as three distinct cars. The supercharged 230 shoves you back when the blower spools; the V6 320 is a smoother, comfortable cruiser; and the supercharged SLK32 AMG is a different animal entirely, with a hand-built engine on forged internals and a beefed-up automatic. …
• SLK32 AMG: supercharged V6 sleeper and its automatic-only gearboxdriving
  The R170 SLK32 AMG is prized as an underappreciated supercharged-V6 sleeper, quick enough to embarrass sports-car owners and, per one owner, a touch quicker than the later V8 SLK55. Its only weak spot is the drivetrain: the 722.6 5-speed automatic is called indestructible but 'too tame,' and AMG never offered the car with a manual. …
• SLK32 AMG ownership costs: supercharger bearing, air pump, roof pinsownership
  A detailed R170 SLK32 owner catalogs the AMG-specific wear items: the supercharger clutch-pulley bearing (dealer replaces the whole clutch/pulley unit ~$1000, though the bearing alone is ~$60-70 and a DIY with an oven and freezer), a hard-to-source AMG-only secondary air injection pump needed to pass California smog, fragile heated-seat wiring, trunk struts, and a roof scissor pin that lost its circlip and stuck the top. …
• SLK55 AMG V8: naturally aspirated sound and bargain statusmarket
  The R171 SLK55 AMG's naturally aspirated V8 is celebrated for a glorious full-throttle sound and repeatedly called a low-mileage bargain. Owners daily-drive them with only routine maintenance, and the 2009 facelift cars are noted to make more power (lower gearing, higher compression, less restrictive exhaust) with lighter wheels. …
• P30 performance package and how to spot ithistory
  The AMG P30 (P030) performance package is discussed as the desirable SLK55 spec, including a mechanical limited-slip differential and upgraded struts. Owners describe the visual tells: twin five-spoke multi-piece wheels, carbon (not aluminum) interior trim, and an Alcantara steering wheel. …
• R171 SLK350 M272 engine concerns: oil consumption, cam sprocket, balance shaftmechanical
  The V6 SLK350's M272 draws careful buyer scrutiny. Commenters cite an MB TSB covering excessive oil consumption on early engine serial numbers, plus premature intake cam sprocket/'balance shaft' wear and EGR-fouled intake swirl flaps, generally surfacing around 50-80k miles. …
• R172 SLK/SLC: turbo four, nose-heavy handling, Air Scarf and Magic Skydriving
  The final R172 generation (SLK250 turbo four, plus V6 and V8) is seen as the most sorted, a comfortable GT rather than a canyon carver, with owners noting it feels nose-heavy. Signature options are the heated Air Scarf neck warmer (effective for cold top-down driving) and the Magic Sky Control panoramic roof. …
• Underappreciated value and the 'stole it' marketmarket
  The dominant market sentiment across every trim is that SLKs sell cheaply for what they are, with 'well bought,' 'stolen,' and 'underappreciated' recurring in nearly every thread. Commenters position them as far more car than a similarly priced Miata and a bargain against a Boxster, while low demand keeps US prices soft. …
• Europe reimporting R170s while US demand stays lowmarket
  A recurring transatlantic observation: European (especially German) demand for the R170 is high enough that cars are being imported back from the US and Japan, where they would sell for far more than US hammer prices. Commenters attribute the US softness to low domestic demand rather than any flaw in the car. …
• Roadster comparisons: Boxster, Z3/Z4, Miata, and the 'not a sports car' viewdriving
  The SLK is perpetually cross-shopped against the Porsche Boxster and BMW Z3/Z4, with the community consensus that it is a comfortable touring roadster rather than an outright sports car, more appropriately compared to a Z3 than a Boxster. A minority push back hard, calling it slow, vague, and cursed with a poor exhaust note. …
• The 'chick car' / hairdresser reputationhistory
  Owners repeatedly confront and mostly reject the SLK's 'chick car' or 'hairdresser's car' reputation, especially for base cars in silver. Some reframe the attention as a feature; others argue a black, stick-shift example with real power dispels the stereotype. …
• Staggered 17-inch wheels can't be rotated front-to-rearbuying
  Sport-package R170s run a staggered setup (roughly 225 front / 245 rear on 17-inch AMG wheels, or 205/55 front and 225/50 rear per one owner), meaning tires cannot be rotated front-to-rear. Buyers use mismatched or all-square tire sizes as a tell for incorrect fitment. …
• Taillight recall and expensive/scarce key fobsownership
  Two documented small-item issues: a manufacturing flaw in the R170 taillights caused frequent shorting and light failure, with MB offering free replacements/recall work (many done around 2007); and replacement key fobs are costly and increasingly scarce, with owners quoting $200-$250+ plus programming and dwindling MB inventory. …
• DIY-friendliness and parts-bin sharing (W202 C-Class, Crossfire)ownership
  Owners rate the R170 as among the last easy-to-DIY Mercedes, engineered off the proven W202 C-Class with a shared parts bin that keeps maintenance cheap and factory parts available. Many interior and mechanical components interchange with the Chrysler Crossfire, which used the same platform. …
• 300SL Gullwing replicas built on the SLK320 chassishistory
  A niche but vivid thread: coachbuilders turn SLK320 chassis into 300SL Gullwing tribute cars that can sell for hundreds of thousands. Commenters debate legality, noting MB holds the Gullwing design rights and has crushed at least one individually owned replica, while builders historically shipped cars unbadged with a 'care package' of badges for owners to fit themselves. …
• Long-term reliability and high-mileage durabilityownership
  Beyond the known small issues, owners report the drivetrains are robust and long-lived. High-mileage anecdotes include an SLK320 sold at 370k miles and a 160k-mile manual 230 used as a winter beater that needed almost nothing, reinforcing the view that these are solid, vault-like cars when maintained. …