10 Used Mercedes-Benz Models You Should Avoid at All Costs
A three-pointed star doesn't guarantee a trouble-free car. These model years are linked to stalling engines, failing transmissions, piles of recalls — and repair bills that can wipe out whatever you saved.
⚡ Quick answer
The used Mercedes-Benz models with the worst track records are the 2006 E350, 2007 S550, 2012 C250, 2014 CLA250, 2015 C300, 2016 GLE350, 2016 Sprinter, 2019 GLC, 2020 GLE and 2020 GLB250. Their problems range from engine stalling and transmission failure to faulty airbags, brake complaints and up to 36 recalls on a single model.
Say "Mercedes-Benz" and most people think of two things: luxury and engineering. For most of its lineup, the brand earns that reputation. But every carmaker has bad years — and with a German luxury car, a bad year hurts twice, because the parts and labor cost far more than an ordinary sedan.
That's why the model year matters so much when you shop used. Below are the 10 Mercedes models that pull the most owner complaints and recalls, based on reporting by SlashGear and complaint data filed with the U.S. National Highway Traffic Safety Administration (NHTSA). We grouped them into sedans, SUVs and vans so you can jump straight to what you're shopping for.
📋 Jump to a model
How to read our risk level: ● Severe means owners reported problems that can cut power, steering or braking while driving. ● High means costly, recurring faults. This is our editorial rating, based on the type of complaints reported.
The Sedans to Skip
Mercedes-Benz C300
● High riskIt launched to great reviews as an elegant, five-seat compact sedan — but owners quickly found problems. The turbo four-cylinder engine drew more than 120 complaints to NHTSA, many tied to a P052E fault code, which points to a failing crankcase ventilation valve. Electrical faults followed, including a power steering control unit that ended in a recall. NHTSA also looked into reports of sunroofs shifting out of place or even detaching.
Mercedes-Benz C250
● High riskThis was a core C-Class trim until it was dropped in 2015, and the 2012 model racked up 586 NHTSA complaints. Airbag problems — including bags deploying when they shouldn't — were fixed through recalls. The engine is another story: owners describe a loud, tractor-like rattle at startup, which mechanics link to failing camshaft adjusters and sometimes the timing chain and tensioner. Some owners replaced the whole engine, and no recall was issued. Reports of a rusting, cracked rear frame round out the list.
Mercedes-Benz CLA250
● Severe riskThe CLA's swoopy coupe-style design turned heads, but the first model year let buyers down. It has 190+ NHTSA complaints, led by engines that stall and shut off. Owners also report the car suddenly dropping into a mode where it refuses to accelerate. Many had to tow it to the dealer, and some repairs reached about $4,000. Six recalls didn't fix the core issues, and CarComplaints still lists 2014 as the worst CLA250 year.
Mercedes-Benz E350
● High riskLater E350s turned out solid, but the 2006 car carries its most famous flaw: balance shaft failure. It can cause heavy vibration, misfires and, in bad cases, a car that stops running — and Mercedes never issued a recall for it on this model. Owners also reported fuel leaks with a strong smell inside the cabin. Mercedes reportedly extended coverage for that fuel issue to 15 years, but many owners say they found out too late, and some say dealers refused the fix.
Mercedes-Benz S550
● Severe riskThe flagship S-Class got a new engine and a roomier cabin for 2007, but the transmission became its weak point. Owners reported cars that wouldn't accelerate, wouldn't move at all, or got stuck in one gear — sometimes even after repairs. There's no recall for it, and NHTSA files also show electrical and suspension complaints. CarComplaints ranks 2007 as the worst S550 model year.
"A recall means the maker admitted a problem. No recall doesn't mean there's no problem."
Editor's note — three of the worst defects on this list (E350 balance shaft, C250 camshaft adjusters, S550 transmission) were never recalled.The SUVs That Let Owners Down
Mercedes-Benz GLC
● High riskIt was supposed to fix the 2018 model, but it brought new problems. Driver aids like adaptive cruise control, active steering assist and cross-traffic assist sat behind a $2,700 premium package, while many rivals made them standard. Owners filed complaints about the body, electrics, steering and seat belts — including front panels coming loose on the road. The model has seen up to 14 recalls. Good news: the 2020 GLC fixed many of these issues.
Mercedes-Benz GLE
● Severe riskThe redesign looked sharp, but reliability didn't follow. The 2020 GLE has seen up to 36 recalls — the most on this list. Trouble spots include the 48-volt battery system and badly installed air conditioning that let water leak into the footwell, which owners say caused corrosion and possibly electrical damage. Speed-control complaints are common too; one owner told NHTSA his SUV slid off the road and hit a concrete divider. As recently as March 2024, a recall was issued to tighten a 48-volt ground connection.
Mercedes-Benz GLE350
● Severe riskMost GLE350 years are fine — this one isn't. The biggest issue on record is the fuel system: owners said the SUV lost power and stalled at different speeds with no warning. Mercedes recalled that specific fault, but other fuel complaints were left unsolved. Even more worrying, some owners say the powertrain stopped accelerating or shifted into Park on its own while driving. Add steering, body and engine complaints plus high repair costs, and it's the year to avoid.
Mercedes-Benz GLB250
● High riskA roomy compact SUV with an optional third row sounded like a smart buy. Owners disagree. Rear spoilers have come loose or fallen off, and one owner said the sunroof started rattling within the first week. Screens can suddenly go blank, and — most worrying — the emergency call system can be slow or send the wrong location to responders after a crash. There have been 20 recalls, yet some owners say they were turned away because their issue wasn't covered or parts weren't available.
The Van With the Scariest Record
Mercedes-Benz Sprinter
● Severe riskSprinters are loved by businesses and van-lifers, and newer ones are much better. But complaints got worse every year from 2013 to 2016, and the 2016 van collected 16 recalls. A failing wheel speed sensor can make the transmission shift erratically and the van surge forward, lighting up the ESP, ABS and check-engine warnings all at once — and some owners say it kept happening after the sensor was replaced. There are also reports of brakes suddenly not working. Some owners say the parts needed for recall repairs weren't available.
All 10 at a Glance
| Model | Biggest problem | Red flag | Risk |
|---|---|---|---|
| 2006 E350 | Balance shaft failure | Never recalled | High |
| 2007 S550 | Transmission failure | Worst S550 year | Severe |
| 2012 C250 | Camshaft adjuster rattle | 586 complaints | High |
| 2014 CLA250 | Stalling, no acceleration | 190+ complaints | Severe |
| 2015 C300 | Engine (P052E), sunroof | 120+ complaints | High |
| 2016 GLE350 | Fuel system, shifts to Park | Stalls at speed | Severe |
| 2016 Sprinter | Wheel sensor, brakes | 16 recalls | Severe |
| 2019 GLC | Loose panels, missing features | Up to 14 recalls | High |
| 2020 GLE | 48V system, water leaks | Up to 36 recalls | Severe |
| 2020 GLB250 | Emergency call, displays | 20 recalls | High |
⚠️ Keep in mind: recall and complaint counts keep changing as NHTSA updates its records. A car from a "bad" year can still be fine if every recall was done and it was well maintained — and a car from a "good" year can still be a lemon. Always check the specific car, not just the badge.
15 Years of Trouble: The Timeline
Already Looking at One? Do These 6 Things First
Run the VIN for open recalls on NHTSA's free tool at nhtsa.gov/recalls. Every open recall should be done before you pay.
Ask for the full service history. On a Mercedes, regular maintenance matters more than low mileage.
Pay for an independent inspection by a Mercedes specialist, including a scan for stored fault codes.
Start it cold and listen. A rattle in the first seconds can point to timing chain or camshaft adjuster wear.
Take a long test drive. Watch for harsh or late shifts, hesitation, stalling and any warning lights on the dash.
Check every screen, the sunroof and body panels. Many of these models fail in the electronics and trim, not just the engine.
The Bottom Line
A used Mercedes can be a brilliant deal — or a very expensive lesson. The model year makes a huge difference: the 2019 GLC and 2020 GLC are a good example of how much one year can change. If a car on this list is priced "too good to be true," there's probably a reason. Check the VIN, get an inspection, and be ready to walk away.
Frequently Asked Questions
What is the worst used Mercedes-Benz to buy?
There's no single official ranking, but the 2014 CLA250 and 2007 S550 are rated the worst years for their models by CarComplaints, and the 2020 GLE has the most recalls on this list, with up to 36.
Which Mercedes SUV years should I avoid?
The 2016 GLE350, 2019 GLC, 2020 GLE and 2020 GLB250 have the most complaints and recalls among Mercedes SUVs covered here.
Is the 2020 GLC better than the 2019 GLC?
Yes. The 2020 GLC addressed many of the problems reported on the 2019 model, which makes it the smarter used pick.
Does a recall mean the problem is fixed?
Not always. Some major defects were never recalled — like the 2006 E350 balance shaft, 2012 C250 camshaft adjusters and 2007 S550 transmission — and some owners say recall repairs were refused or delayed because parts weren't available.
How can I check a used Mercedes for recalls?
Enter the car's 17-character VIN on NHTSA's free recall lookup at nhtsa.gov/recalls. It shows any safety recalls that haven't been repaired on that exact vehicle.
Are all used Mercedes-Benz cars unreliable?
No. Many Mercedes models and model years have good records. The problems are concentrated in specific years, which is why checking the exact year and the car's history matters so much.
Sources: Reporting by SlashGear (updated September 2026), U.S. NHTSA owner complaint and recall records, and CarComplaints model-year rankings. Recall and complaint totals may change as records are updated.
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