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Ford F-550 SDModel year report

2021 Ford F-550 SD Problems

Complaints
12filed with NHTSA
Median mileage
148,000miles, 2 complaints with mileage
Recalls
91 do-not-drive
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

Sources: NHTSA records for the 2021 Ford F-550 SD (complaints, recalls, investigations). Report an error

NHTSA recorded 12 consumer complaints for the 2021 Ford F-550 SD. The part named most often is fuel system, with 10 complaints (83% of the total), followed by engine (2) and engine cooling (1). 2 of the complaints include a mileage, and 0% of those were filed for vehicles with under 50,000 miles; the median is 148,000 miles. Of all complaints, 2 a fire, according to the filers. NHTSA lists 9 recall campaigns (1 marked do-not-drive) and 237 technical service bulletins for this model year. Fuel system complaints overlap with 4 recall campaigns covering the fuel pump and 12 technical service bulletins filed under the same part. Engine complaints overlap with 18 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Fuel system: “Operator was driving a 2021 Ford F550 equipped with an Altec AT48M aerial upfit. As he was driving the operator noted that the check engine light came on and almost immediately followed by the message center displayed Low Fuel Pressure warning. As he was preparing to stop, he could see smoke coming out from under the hood of the truck. As he exited the cab, he could see smoke and flames coming out of the truck.”

NHTSA complaint #11667475, filed 2025-06

Engine: “While driving down the road at approximately 45 mph, under normal conditions, with no warning indicators the low fuel pressure light came on. When the driver stopped the vehicle he lost all power and observed smoke emanating from the underside and hood of the vehicle. Prior to him exiting the vehicle he observed flames shooting out from under the console towards his feet. Upon exiting the vehicle I saw flames under the hood of the vehicle and utilized his supplied fire extinguisher to attempt to put the fire out. …”

NHTSA complaint #11433239, filed 2021-09

Steering: “While driving and getting off the freeway at approximately 55 PMH truck when into a violent death wobble and had to slam on the brakes and come to a complete stop before it started. Truck has 36,384 miles on it and all front end steering is tight with no play, steering stabilizer was replaced with an aftermarket due to Ford's is an National back order and not known when will be available and Ford told me that this is not covered under warranty or any recall even though there are 5100 of them on back order! …”

NHTSA complaint #11479389, filed 2022-08

Mileage when problems were reported

0% of the 2 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 101,000 and 195,000 miles.

0%0–100%10–250%25–500%50–750%75–10050%100–15050%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (2 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 148,000 miles.

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

202120222024202562026
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Recalls and investigations

See all 9 recalls for the 2021 Ford F-550 SD → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 237 on record; the latest 10 are shown.

See all 237 bulletins →

Other model years of the Ford F-550 SD

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2022985,00012———Not enough data
202112148,0009———Not enough data
20151122,3503———Not enough data
2014933,0066———Not enough data
2012640,50010———Not enough data
20082633,0004——Not compared (fewer than 3 comparable model years)Falling
20072332,5001———Falling
20064443,9821——Not compared (before 2008)Falling
20053247,5004——Not compared (before 2008)Stable
20044936,0002——Not compared (before 2008)Stable
20033360,0005——Not compared (before 2008)Stable
20022259,0004———Falling
200129130,0006——Not compared (before 2008)Rising
20007251,5005——Not compared (before 2008)Falling
19996165,0008——Not compared (before 2008)Stable

All Ford F-550 SD model years · Best and worst years by complaints

Frequently asked questions

How many NHTSA complaints does the 2021 Ford F-550 SD have?

NHTSA recorded 12 consumer complaints for the 2021 Ford F-550 SD as of Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2021 Ford F-550 SD is reported most often?

Fuel system is named most often, in 10 complaints (83% of the total), followed by engine with 2.

Has the 2021 Ford F-550 SD been recalled?

NHTSA lists 9 recall campaigns for this model year, 1 of them with a do-not-drive advisory. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

At what mileage are problems with the 2021 Ford F-550 SD reported?

Among the 2 complaints that include a mileage, the median is 148,000 miles and the middle half falls between 101,000 and 195,000 miles; 0% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.