2005 Mercedes-Benz Slk-Class Reliability Score: 7.2 out of 10

Reliability Score

7.2 / 10

Reliability score

About as many owner complaints as similar sports cars

The class average is 7.0. Based on complaints owners filed with NHTSA about the engine, transmission or drivetrain.

Owners filed 16 powertrain complaints. A typical sports car fleet of this size and age would have drawn about 16.

Scores this low have often eased: the three years after looked about 0.8 points better in the typical case.

Breakdown

Complaints overall16 complaints against about 16 for similar vehicles

7.2

Last three years

n/aNot enough data

Engine, transmission or drive unit failed or replaced

n/aNot enough data

Oil consumption, fuel in the oil or overheating

n/aNot enough data

Each line scores one view of the same complaints the same way, so the lines overlap. The mark on each bar is the class average. A line needs 20 expected complaints to show a number.

Similar vehicles are others in the same class, compared at the same age and in the same years. The score counts complaints owners filed with NHTSA, per vehicle built, which is different from the share of vehicles that fail. How the score is worked out

On the record

No serious powertrain recall covering 5% or more of this generation and no escalated investigation in NHTSA's files. Warranty extensions and settlements have not been researched.

Complaints by Engine Code

3.5-V6-Gas

3.5L 6-cyl / 268 hp

26 complaints 26.0 per year Gasoline

1 fire report

View details

Complaint Breakdown

transmission

9

engine

7

brakes

6

suspension

5

cooling

5

Same engine used in

CHRYSLER 300 (2011-2023)MITSUBISHI Montero (2001-2006)MERCEDES-BENZ E-Class (2003-2009)FORD Explorer (2011-2019)CHRYSLER Prowler (2001-2002)FORD Expedition (2018-2025)

+74 more

MERCEDES-BENZ ML-Class (2012-2015)CHRYSLER LHS (2000-2001)TOYOTA Avalon (2013-2018)CHRYSLER Concorde (2000-2004)MERCEDES-BENZ GL-Class (2007-2012)KIA Amanti (2004-2009)FORD Fusion (2006-2012)MERCEDES-BENZ R-Class (2006-2013)LEXUS IS (2014-2025)FORD F-150 (2004-2008)MITSUBISHI Montero Sport (2000-2004)NISSAN Murano (2009-2014)LINCOLN MKX (2007-2015)MERCEDES-BENZ CLA-Class (2014-2019)FORD Transit (2015-2025)LINCOLN MKZ (2007-2012)FORD Edge (2007-2014)CHRYSLER Town & Country (2008-2016)FORD Taurus (2010-2019)FORD Taurus (2008-2009)MERCEDES-BENZ GLA-Class (2015-2019)CHRYSLER Sebring (2007-2010)DODGE Ram (2000-2001)FORD F-150 (2015-2020)FORD Edge (2015-2024)JEEP Grand Cherokee (2000-2004)FORD Taurus (2000-2007)FORD Flex (2009-2019)INFINITI QX50 (2008-2017)INFINITI Q70 (2006-2010)JEEP Grand Cherokee (2005-2010)INFINITI QX60 (2013-2020)FORD F-150 (2009-2014)MERCEDES-BENZ ML-Class (2000-2005)DODGE Journey (2009-2020)CHRYSLER Sebring (2001-2006)HYUNDAI Santa Fe (2001-2006)KIA Sorento (2011-2015)DODGE Charger (2006-2010)CHRYSLER Pacifica (2004-2008)NISSAN Altima (2013-2018)INFINITI QX4 (2000-2003)MERCEDES-BENZ ML-Class (2006-2011)HYUNDAI Santa Fe (2007-2012)NISSAN Maxima (2004-2008)NISSAN Pathfinder (2013-2020)MERCEDES-BENZ C-Class (2001-2007)DODGE Stratus (2001-2006)LINCOLN MKT (2010-2019)NISSAN Murano (2015-2025)NISSAN Pathfinder (2005-2012)DODGE Neon (2000-2005)LINCOLN MKZ (2013-2020)FORD Expedition (2007-2017)MERCEDES-BENZ C-Class (2008-2014)DODGE Intrepid (2000-2004)FORD F-150 (2021-2025)CHRYSLER 300 (2005-2010)HYUNDAI XG350 (2001-2005)NISSAN Maxima (2009-2014)DODGE Magnum (2005-2008)FORD Transit Connect (2014-2023)NISSAN Altima (2007-2012)MERCEDES-BENZ E-Class (2010-2016)HYUNDAI Santa Fe (2013-2018)MERCEDES-BENZ E-Class (2024-2026)MERCEDES-BENZ GLE-Class (2016-2019)DODGE Challenger (2008-2023)RAM 2500 (2010-2018)KIA Sorento (2003-2009)MERCEDES-BENZ C-Class (2015-2021)DODGE Avenger (2008-2014)LEXUS RX (2016-2022)FORD F-150 (2000-2003)

Show 1 additional engine variant with limited data

These engines appear in fewer than 10 owner complaints. A low count can mean a clean record, and it can also be a VIN-decode anomaly in NHTSA's data.

3.2-V6-Gas

3.2L 6-cyl / 215 hp

1 complaint 1.0 per year Gasoline

View details

Complaint Breakdown

transmission

1

Same engine used in

JEEP Grand Cherokee (2011-2021)MERCEDES-BENZ E-Class (2003-2009)CHRYSLER Concorde (2000-2004)AUDI A5 (2008-2016)JEEP Wrangler (2007-2018)AUDI A6 (2005-2011)

+29 more

Owner Complaints by System

Complaints owners filed with NHTSA about the Mercedes-Benz Slk-Class, counted across every engine. A complaint can name more than one system.

Transmission: 10 owner complaints

Engine: 7 owner complaints

Brakes: 6 owner complaints

All Generations

20052005 20062006 20072007

Alternatives in Sports Car

4 engines / 69 complaints

5 engines / 24 complaints

6 engines / 41 complaints

3 engines / 27 complaints

1 engine / 22 complaints

3 engines / 24 complaints

Frequently Asked Questions

What are the most common 2005-2005 Mercedes-Benz Slk-Class complaints?

Owners have filed 27 complaints with NHTSA about the 2005-2005 Mercedes-Benz Slk-Class. The systems they name most often are the transmission, the engine and the brakes.

Is the 2005-2005 Mercedes-Benz Slk-Class a good used car?

That depends on the model year, the mileage and the maintenance history of the car in front of you. Owners have filed 27 complaints with NHTSA about the 2005-2005 Mercedes-Benz Slk-Class. Check which systems they name most often and whether a recall is still open on that car.

How many NHTSA complaints does the 2005-2005 Mercedes-Benz Slk-Class have?

NHTSA has 27 owner complaints on file for the 2005-2005 Mercedes-Benz Slk-Class as of the latest data pull. A complaint is an owner's report, not a confirmed defect, and counts rise with sales.

What recalls affect the 2005-2005 Mercedes-Benz Slk-Class?

NHTSA lists no recalls for the 2005-2005 Mercedes-Benz Slk-Class.

What should I check before buying a used Mercedes-Benz Slk-Class?

Run the VIN through NHTSA's recall lookup and confirm every open recall has been done. Look hardest at the transmission, the engine and the brakes, the systems owners complain about most. Ask for maintenance records, have an independent mechanic inspect the car and run a vehicle history report for prior accidents and title issues.

Does the Slk-Class have NHTSA crash test ratings?

NHTSA has not published crash test ratings for the 2005 Mercedes-Benz Slk-Class. Not all vehicles are tested each year. For the latest NHTSA safety information, visit nhtsa.gov/ratings.

Data from NHTSA federal complaints database. 27 complaints analyzed. Data confidence: low. Last updated: 2026-10-12.