Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 18, 2026.
Fuel economy
14–21 mpgcombined; city 12–19, highway 19–25; every version of this model year
Five years of fuel
$19,160–$28,750U.S. average; Ohio $18,060–$27,080 at local prices; every version of this model year; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA overall safety rating
Not ratedNHTSA has no overall rating for this year
NHTSA's VIN data lists these trims for the 2012 S-Class. A trim's engine and numbers are shown as its own only where EPA names versions after the trim and no other version could be it; "seen with" means a source shows that engine on the trim, not that it was the only one. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 6 complaints with NHTSA about the 2012 S-Class. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Engine
3
0
1
0
Fuel/propulsion system
3
0
0
0
Electrical system
1
0
0
0
Power train
1
1
0
0
Steering
1
0
1
0
What the columns count
Complaints: complaints that name that part. One complaint can name several parts, so the rows overlap and don't add up to the total.
Crashes and Fires: complaints that report one. Two owners can file about the same event, and NHTSA doesn't link them, so these count reports, not events.
Injuries: the number of people the complaints say were injured.
None of these columns shows that a part caused a crash, fire or injury: they're what owners reported, unverified.
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 3 recall campaigns for the 2012 S-Class over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
Fuel system, gasoline
NHTSA campaign 12V557000 · reported Dec 3, 2012 · 5,800 vehicles potentially affected across the whole campaign
Remedy: Mercedes-Benz will notify owners, and dealers will replace the fuel filter, free of charge. The recall campaign is expected to begin in February 2013. Owners may contact Mercedes-Benz at 1-800-367-6372.
Mercedes-Benz is recalling certain model year 2011-2012 S400, S550, S550 4Matic, S63 AMG, C300, C300 4Matic, E350, GLK350, GLK350 4Matic, CL550 4Matic, and CL63 AMG vehicles manufactured from April 18, 2011, through July 12, 2011. Due to an irregularity stemming from the molding process of the fuel filter flange, the fuel filter flange may crack when operated in high temperatures.
Risk: If the fuel filter flange cracks, it will leak fuel which may lead to a fire if an external ignition source is present.
NHTSA campaign 11V493000 · reported Oct 3, 2011 · 158 vehicles potentially affected across the whole campaign
Remedy: Mercedes Benz will notify owners, and dealers will reprogram the tire pressure monitoring unit, free of charge. The recall began on September 12, 2014. Owners may contact Mercedes Benz at 1-800-367-6372.
Mercedes-Benz USA, LLC (Mercedes Benz) is recalling certain model year 2011-2012 S550, S550 CGI, S63, S600 Bi-Turbo, S65 AMG, S550 4-Matic, and S550 CGI 4-Matic and S400 Hybrid vehicles manufactured from March 3, 2011, through July 30, 2011, for failing to comply with the requirements of Federal Motor Vehicles Safety Standard (FMVSS) number 138, "Tire Pressure Monitoring System (TPMS)." The tire pressure monitoring system indicators may only illuminate for a portion of the time required by the standard and under certain conditions may not re-illuminate immediately after the vehicle is restarted as required.
Risk: If all four wheel sensors in the subject vehicles are simultaneously malfunctioning or missing, the TPMS will provide an initial warning, but this warning will not automatically repeat on subsequent ignition cycles, failing to remind the driver that the system is offline. Driving unknowingly with incorrectly inflated tires may result in sudden tire failure, increasing the risk of a crash.
NHTSA campaign 11V496000 · reported Oct 3, 2011 · 6,872 vehicles potentially affected across the whole campaign
Remedy: MBUSA WILL CONTACT OWNERS, AND DEALERS WILL INSPECT AND REPLACE THE DIESEL FUEL FILTER IF NECESSARY, FREE OF CHARGE. THE SAFETY RECALL BEGAN ON NOVEMBER 30, 2011. OWNERS MAY CONTACT MERCEDES-BENZ USA AT 1-800-367-6372.
MERCEDES-BENZ USA (MBUSA) IS RECALLING CERTAIN MODEL YEAR 2011 VEHICLES INCLUDING E-CLASS (212 PLATFORM), MANUFACTURED FROM JULY 2010 THROUGH FEBRUARY 2011, R-CLASS (251 PLATFORM), MANUFACTURED FROM APRIL 2010 THROUGH APRIL 2011, ML-CLASS (W164 PLATFORM), MANUFACTURED FROM JANUARY 2010 THROUGH MARCH 2011, GL-CLASS (X164 PLATFORM), MANUFACTURED FROM MARCH 2010 THROUGH MARCH 2011, AND MODEL YEAR 2012 S-CLASS (221 PLATFORM) VEHICLES. THE DIESEL FUEL FILTER MAY LEAK FROM THE AREA AROUND THE HEATING COMPONENT.
Risk: DIESEL FUEL MAY BE DEPOSITED ONTO THE HIGHWAY AND CREATE THE POTENTIAL FOR A CRASH.
Carmakers sent NHTSA 97 service bulletins and notices that cover the 2012 S-Class, the latest on Sep 22, 2026. They tell dealers how to fix known issues.
The parts they mention most: electrical system (28), exterior lighting (14), engine and engine cooling (11), power train (10), seats (9).
NHTSA hasn't opened a defect investigation that covers this model year.
Maintenance
Oil
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2012 S-Class.
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data