Head-to-head reliability
Mercedes BENZ SLK Class vs FORD F 150
How the Mercedes BENZ SLK Class and FORD F 150 compare on NHTSA complaints, recalls and crash reports — and which is the lower-risk used buy.
Based on NHTSA owner-complaint & recall records
Mercedes BENZ SLK Class vs FORD F 150: The SLK has 84 complaints over 10 years (8.4/year) and 0 recalls, while the F-150 has 11,621 complaints (1,162/year) and 151 recalls. The SLK's top issue is air bags; the F-150's is power train. Source: NHTSA owner complaints.
The picture
Is the Mercedes BENZ SLK Class or FORD F 150 more reliable?
A plain-English read on what the NHTSA record says about living with each vehicle.
Mercedes BENZ SLK Class
The Mercedes-Benz SLK Class is a two-seat retractable-hardtop roadster, often bought as a weekend car rather than a daily driver. Over 10 years, owners filed 84 complaints—about 8.4 per year—with no recalls on record. The most common complaint area is air bags, specifically Takata inflator recalls that owners say were never completed. Other reports include roof panel separation, hydraulic leaks, and engine intercooler issues.
FORD F 150
The Ford F-150 is a full-size pickup used for work, hauling, and family transport, so it accumulates miles and complaints quickly. In 10 years, owners filed 11,621 complaints—about 1,162 per year—and the truck has 151 recalls. The dominant complaint areas are power train and electrical system, often tied to transmission limp mode and lead frame failures. There is also one death and 297 injuries reported in crash-related complaints.
The numbers
Side-by-side NHTSA record
Lower is better in every category. The highlighted cell is the stronger result.
| Category | Mercedes BENZ SLK Class | FORD F 150 |
|---|---|---|
| Total complaintsAll model years combined | 84 Better | 11,621 |
| Safety recallsFederal recall campaigns | 0 Better | 151 |
| Crash reportsCrash-related complaints | 1 Better | 330 |
| Complaints per yearAveraged across model years | 8.4 Better | 1162.1 |
| Reported injuriesTied to owner complaints | 2 Better | 297 |
| Reported deathsTied to owner complaints | 0 Better | 1 |
Source: NHTSA owner complaints & recall records.
What actually goes wrong
The problems owners report
The most-complained-about systems on each vehicle — what fails, and what owners say in their own words.
Mercedes BENZ SLK Class
- 01AIR BAGS40
- 02UNKNOWN OR OTHER10
- 03STRUCTURE9
- 04ENGINE7
- 05FUEL/PROPULSION SYSTEM6
Owners report Takata airbag inflator recalls that were never completed, leaving them with airbags that may not deploy correctly. Some say their VIN now shows no active recall even though the repair was never done, which is a serious safety concern.
The convertible roof panel can separate from its cross-support, and the hydraulic system for the hard top can leak oil onto the seats. This can make the roof hard to close or leave it stuck, and repairs can be costly.
A design issue with the air-to-air intercooler can let water collect and then be ingested into the engine under sudden acceleration. Owners report the computer then puts the car into limp mode, limiting power and requiring a dealer visit.
Some owners report strong fumes that smell like burning crayons, especially in hot weather, which can cause eye irritation and headaches. This may point to a fuel or vapor leak that should be checked promptly.
“TAKATA RECALL. THERE WAS A NHTSA CAMPAIGN TO RECALL MY VEHICLE'S AIRBAGS-- NUMBER 16V081000. I WAS CONTACTED BY MAIL NUMEROUS TIMES MY MERCEDES NATIONAL HEADQUARTERS, INDICATING THERE WAS A RECALL AND THE REPLACEMENT AIRBAG WAS ON ORDER. THEY INDICATED I WOUL…”
“I am the owner of a 2007 Mercedes-Benz SLK280 with VIN: [XXX]. My vehicle was part of the Takata airbag recall, but the airbags were never replaced. Currently, the NHTSA recall status for my VIN shows "no active recalls," even though the repair was not comple…”
FORD F 150
- 01POWER TRAIN3,648
- 02ELECTRICAL SYSTEM2,100
- 03UNKNOWN OR OTHER1,431
- 04EXTERIOR LIGHTING1,224
- 05ENGINE880
Owners frequently report transmission problems, including limp mode, getting stuck in 5th gear, and lead frame failures that can cause sudden loss of power. One owner said a lead frame issue nearly ended their life, highlighting the safety risk.
The lead frame issue also appears under electrical complaints, causing intermittent shifting and limp mode. Another reported problem is a short in the rear window defroster that can cause the back window to shatter outward.
With 1,224 complaints, exterior lighting is a top concern, though specific failure details are not in the sample. Buyers should check all lights, including brake and turn signals, for intermittent operation.
Engine complaints number 880, and some are tied to the same limp mode issues as the transmission. The truck may enter reduced power mode, which can be dangerous in traffic.
“This lead frame issue is never ending. Well over a decade without a proper remedy. I’m very familiar with it. but this one nearly ended my life. After the near collision I called my mechanic and bought a new ford lead frame from a dealership. It’s doing fine…”
“My 2017 Ford F-150 V8 with the 6-speed automatic transmission has been experiencing a serious and recurring transmission malfunction. The truck has consistently, almost on a daily basis, gone into limp mode and become stuck in 5th gear. It also frequently fai…”
Official recalls
Safety recalls on record
Federal recall campaigns — the defect, the risk, and the fix. Confirm any open recall was completed before you buy.
Mercedes BENZ SLK Class
No recalls on record.
FORD F 150 — 151 recalls
The defect: Ford Motor Company (Ford) is recalling certain 2015-2019 Ford F-150 and 2017-2019 Ford F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, and F-550 Super Duty pick-up trucks equipped with an engine block heater. Water and contaminants may get into the block heater cable's splice connector causin…
The risk: When the heater is plugged in, prolonged corrosion could cause a resistive short, increasing the risk of overheated or melted wiring which can increase the risk of a fire.
The fix: Ford will notify owners, and dealers will disable the block heater cable, free of charge. Once parts are available, Dealers will replace the engine block heater cable, free of charge. The recall began June 3, 2019. Owners may contact Ford…
The defect: Ford Motor Company (Ford) is recalling certain 2015-2019 Ford F-150 and 2017-2019 Ford F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, and F-550 Super Duty pick-up trucks equipped with an engine block heater and previously remedied under recall 18V894. During the previous repair, the block he…
The risk: A damaged cable could cause a resistive short, increasing the risk of overheated or melted wiring, increasing the risk of a fire.
The fix: Ford will notify owners, and dealers will disable the engine block heater from being used. When replacement cables become available, a second notice will be mailed and dealers will replace the engine block heater cord, free of charge. The…
The defect: Ford Motor Company (Ford) is recalling certain 2015-2018 Ford F-150 Regular Cab and SuperCrew Cab vehicles. If a front seat belt pretensioner deploys as the result of a crash, the sparks may ignite materials such as carpeting or insulation within the B-pillar area.
The risk: A vehicle fire could result if materials ignite inside the vehicle.
The fix: Ford will notify owners, and dealers will remove the B-pillar insulation material and wiring harness tape, and install heat resistant tape, free of charge. The recall began September 28, 2018. Owners may contact Ford customer service at 1-…
The defect: Ford Motor Company (Ford) is recalling certain 2015-2017 Ford F-150, and 2017 F-250, F-350, F-450, and F-550 Super Duty trucks. The doors on these vehicles may have a bent or kinked actuation cable or the door latches may freeze after water gets into the latch. Either condition can result in the do…
The risk: A door that opens while driving can increase the risk of injury.
The fix: Ford will notify owners, and dealers will inspect the door latch actuation cables and repair if necessary, and install water shields over the door latches, free of charge. The recall began October 12, 2018. Owners may contact Ford customer…
Buyer analysis
Mercedes BENZ SLK Class or FORD F 150: which should you buy?
The Mercedes-Benz SLK Class has far fewer complaints per year—about 8.4 versus 1,162 for the Ford F-150—and no recalls on record. In practice, the SLK is a low-volume sports car with fewer reported problems overall, while the F-150 is a high-volume truck with many more complaints and recalls, though that partly reflects how many more are on the road.
Key differences
- The SLK has 84 complaints over 10 years and 0 recalls; the F-150 has 11,621 complaints and 151 recalls.
- SLK owners most often report air bag (Takata) and roof/hydraulic issues; F-150 owners most often report transmission limp mode and lead frame failures.
- The F-150 has 330 crash-related complaints, 297 injuries, and 1 death; the SLK has 1 crash-related complaint, 2 injuries, and 0 deaths.
- The SLK is a two-seat convertible with limited use; the F-150 is a full-size pickup that accumulates miles and complaints faster.
- Check that the Takata airbag recall was actually completed—ask for paperwork, because some owners report the repair was never done even though the VIN shows no active recall.
- Inspect the convertible roof for panel separation and check for hydraulic fluid leaks on the seats or carpet, as these are reported failure points.
- Test drive the truck and watch for limp mode, rough shifting, or getting stuck in 5th gear—these are common signs of lead frame or transmission problems.
- Check the rear window defroster for shorts and look for any cracks or previous shattering, as owners report the back window can explode outward.
Before you buy
- For the SLK, ask for the airbag recall completion receipt and have a mechanic inspect the roof hydraulics and intercooler for water ingestion.
- For the F-150, scan for transmission trouble codes (like P0722) and test drive at highway speeds to check for limp mode.
- On both vehicles, run a VIN check for open recalls and confirm any recall work was done by a dealer.
- Take a long test drive that includes stop-and-go traffic and highway merging to reveal transmission or engine limp mode issues.
- Have a pre-purchase inspection done by a shop that knows these models, focusing on the SLK's roof and the F-150's transmission and electrical system.
Check the actual car
Comparing models is smart. Checking the VIN is essential.
Brand averages tell you the trend. A VIN check tells you what's wrong with the specific Mercedes BENZ SLK Class or FORD F 150 in front of you — accident history, open recalls and title records.
Go deeper
Full reliability reports
- Comparison
- Mercedes BENZ SLK Class vs FORD F 150
- Mercedes BENZ SLK Class total complaints
- 84
- FORD F 150 total complaints
- 11,621
- Mercedes BENZ SLK Class total recalls
- 0
- FORD F 150 total recalls
- 151
- Mercedes BENZ SLK Class avg complaints/year
- 8.4
- FORD F 150 avg complaints/year
- 1162.1
- More reliable overall
- Mercedes BENZ SLK Class
- Mercedes BENZ SLK Class top complaint area
- AIR BAGS
- FORD F 150 top complaint area
- POWER TRAIN