OBD diagnostics · purchase protection

2021 Ford Mustang
Common Problems & Inspection Guide

Verify baseline vehicle system stability data. Learn what to check on the physical vehicle computer before signing a bill of sale.

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Platform Heritage

The Ford Mustang is an American automobile manufactured and marketed by Ford since 1964, as Ford's longest nameplate in continuous production. Currently in its seventh generation, it is the fifth-best selling Ford car nameplate. The namesake of the "pony car" automobile segment, the Mustang was developed as a highly styled line of sporty coupes and convertibles derived from existing model lines, initially distinguished by its pronounced "long hood, short deck" proportions. Originally predicted to sell 100,000 vehicles yearly, the 1965 Mustang became the most successful vehicle launch since the 1927 Model A. Introduced on April 17, 1964 (16 days after the Plymouth Barracuda), over 400,000 units were sold in its first year; the one-millionth Mustang was sold within two years of its launch. In August 2018, Ford produced the 10-millionth Mustang; matching the first 1965 Mustang, the vehicle was a 2019 Wimbledon White convertible with a V8 engine. The success of the Mustang launch led to multiple competitors from other American manufacturers, including the Chevrolet Camaro and Pontiac Firebird (1967), AMC Javelin (1968), and Dodge Challenger (1970). It also competed with the Plymouth Barracuda, which was launched around the same time. The Mustang also had an effect on designs of coupes worldwide, leading to the marketing of the Toyota Celica and Ford Capri in the United States (the latter, by Lincoln-Mercury). The Mercury Cougar was launched in 1967 as a unique-bodied higher-trim alternative to the Mustang; during the 1970s, it included more features and was marketed as a personal luxury car. From 1965 until 2004, the Mustang shared chassis commonality with other Ford model lines, staying rear-wheel-drive throughout its production. From 1965 to 1973, the Mustang was derived from the 1960 Ford Falcon compact. From 1974 until 1978, the Mustang (denoted Mustang II) was a longer-wheelbase version of the Ford Pinto. From 1979 until 2004, the Mustang shared its Fox platform chassis with 14 other Ford vehicles (becoming the final one to use the Fox architecture). Since 2005, the Mustang has used the D2C platform, unique to the Mustang. Through its production, multiple nameplates have been associated with the Ford Mustang series, including GT, Mach 1, Boss 302/429, Cobra (separate from Shelby Cobra), and Bullitt, along with "5.0" fender badging (denoting 4.9 L OHV or 5.0 L DOHC V8 engines).

Source: Wikipedia intro extract · as of Jun 19, 2026

Key facts for this model year

54NHTSA owner complaints
6Safety recalls on file
9Top issue reports · Fuel System
$0Typical OEM recall remedy cost to you

~6.9k average monthly buyer searches in the US (google ads data · as of Jun 19, 2026). Run a MotoMetrics scan for your VIN to see live repair exposure.

Verify the data — open primary sources · as of Jun 19, 2026

System Defect Summaries & Field Data

Active safety recalls on file: 6 (source: NHTSA Recalls API · as of Jun 19, 2026)

Top NHTSA complaint categories

Recent recall summaries

Campaign 21V980000 · AIR BAGS:SIDE/WINDOW:CURTAIN · API record

Ford Motor Company (Ford) is recalling certain 2021 Mustang vehicles. The side curtain air bag inflators may have been manufactured with the incorrect amount of compressed gas, which can result in improper air bag inflation. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 226, "Ejection Mitigation," and 214, "Side Impact Protection."

Campaign 22V083000 · AIR BAGS:KNEE BOLSTER · API record

Ford Motor Company (Ford) is recalling certain 2021-2022 Mustang vehicles. An insufficient weld on the front passenger knee air bag may result in an improper air bag deployment.

Campaign 23V727000 · ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM · API record

Ford Motor Company (Ford) is recalling certain 2020-2023 Mustang vehicles. The brake fluid level sensor may not activate the visual warning indicator when the brake fluid is low. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 135, "Light Vehicle Brake Systems."

Campaign 25V442000 · BACK OVER PREVENTION:SOFTWARE · API record

Ford Motor Company (Ford) is recalling certain 2018-2022 Transit Connect, 2019-2020 MKZ, MKX, Edge, Continental, F-150, Nautilus, Fusion, 2019-2023 Ranger, Mustang, 2020-2021 EcoSport, Expedition, Navigator, 2020-2022 Escape, F-250 SD, Corsair, 2020-2023 Aviator, Transit, 2020-2024 Explorer, 2021-2024 Bronco Sport, and 2022-2024 Maverick vehicles. A software error may cause the rearview camera to display a blank image, or the image may remain on the display after the backing event has ended.

Campaign 25V455000 · FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP · API record

Ford Motor Company (Ford) is recalling certain 2021-2023 Bronco, Explorer, Lincoln Aviator, F-250 SD, F-350 SD, F-450 SD, F-550 SD, 2021-2022 Lincoln Navigator, Mustang, F-150, and 2022 Expedition vehicles. The low-pressure fuel pump may fail, which can result in an engine stall while driving.

YouTube voice themes below are research hints only — verify against NHTSA data before citing.

Search demand cross-check: ~6,860 avg monthly intent searches (source: google ads data · as of Jun 19, 2026)

On-Site Ford Mustang Pre-Purchase Checklist

  1. Verify OBD-II readiness monitors are complete (not recently cleared) using a full protocol scan.
  2. Compare dashboard mileage to ECU-stored odometer modules where accessible.
  3. Pull permanent and pending DTCs — not only stored codes visible on the dash.
  4. Inspect systems related to FUEL SYSTEM, GASOLINE (NHTSA complaint cluster — verify during test drive and PPI).
  5. Inspect systems related to POWER TRAIN (NHTSA complaint cluster — verify during test drive and PPI).
  6. Inspect systems related to BACK OVER PREVENTION (NHTSA complaint cluster — verify during test drive and PPI).
  7. Inspect systems related to ELECTRICAL SYSTEM (NHTSA complaint cluster — verify during test drive and PPI).
  8. Inspect systems related to UNKNOWN OR OTHER (NHTSA complaint cluster — verify during test drive and PPI).
  9. Confirm recall remedy completed for AIR BAGS:SIDE/WINDOW:CURTAIN (campaign 21V980000).
  10. Confirm recall remedy completed for AIR BAGS:KNEE BOLSTER (campaign 22V083000).
  11. Confirm recall remedy completed for ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM (campaign 23V727000).
  12. Run a MotoMetrics on-site scan for Ford Mustang before signing the bill of sale.

Alternative Inferences & Cross-Shopping Matrix

Adjacent model years for this nameplate and equivalent footprints shoppers compare across brands.

Vehicle health varies wildly by individual history. Aggregate recall and complaint data cannot tell you whether the specific car on the lot had its monitors cleared or its odometer rolled back. Verify the physical or digital scan before you sign a bill of sale.

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