2021 Ford Mustang
The 2021 Ford Mustang is a popular sports car known for its iconic styling and performance. Available in a range of trims and configurations, it offers something for every enthusiast. Engine options include the 2.3L EcoBoost inline-4 (310-330 hp and 350-350 lb-ft of torque), the 5.0L Coyote V8 (460-480 hp and 420-420 lb-ft of torque), and the supercharged 5.2L Predator V8 (760 hp and 625 lb-ft of torque) found in the Shelby GT500. Transmission choices consist of a 6-speed manual and a 10-speed automatic, depending on the engine. Common praises for the 2021 Mustang include its powerful engine options, attractive styling, and engaging driving experience. Complaints often center around its cramped rear seats, somewhat cheap interior plastics, and occasionally reported reliability issues.
Engine
2.3L EcoBoost
- Excessive Oil Consumption
- Description/Symptoms: Some owners have reported excessive oil consumption, requiring frequent topping off between oil changes. Symptoms include low oil level warnings and visible blue smoke from the exhaust in some cases.
- Solution: Ford has not issued a widespread solution for this issue. Some owners have had success with oil consumption tests performed by dealerships, which may lead to engine component replacements such as piston rings or valve seals under warranty, if applicable.
- Estimated Cost to Fix: Dependent on the severity of the issue. If caught early and covered by warranty, the cost may be minimal. Out-of-pocket repairs could range from $1,000 to $5,000+ depending on the required work.
- Recalls: None Found
5.0L Coyote V8
- Tick Sound
- Description/Symptoms: Some owners report a ticking or knocking sound, particularly at idle or low speeds. This is often attributed to the direct fuel injection system, but can also be caused by the valvetrain.
- Solution: Diagnosis by a qualified technician is required to determine the exact cause. Possible solutions range from fuel injector cleaning to valve train components replacement.
- Estimated Cost to Fix: $100 - $3,000+ depending on the cause
- Recalls: None Found
- Oil Consumption
- Description/Symptoms: Some 5.0L engines experience excessive oil consumption.
- Solution: There is no widespread solution. Some owners have had success with oil consumption tests performed by dealerships, which may lead to engine component replacements under warranty, if applicable.
- Estimated Cost to Fix: Dependent on the severity of the issue. If caught early and covered by warranty, the cost may be minimal. Out-of-pocket repairs could range from $1,000 to $5,000+ depending on the required work.
- Recalls: None Found
5.2L Predator V8
No Issues Found
Transmission
10-Speed Automatic (10R80)
- Rough Shifting/Harsh Engagement
- Description/Symptoms: Owners have reported rough shifting, particularly between certain gears, and harsh engagement when shifting into drive or reverse. This can be more pronounced when the transmission is cold.
- Solution: Some have found relief with transmission software updates or adaptive learning resets. In more severe cases, valve body replacement or complete transmission replacement may be necessary.
- Estimated Cost to Fix: Software updates may be covered under warranty or cost around $100. Valve body replacement can range from $1,500 - $3,000. Transmission replacement could cost $5,000+.
- Recalls: None Found
- Hesitation/Delay
- Description/Symptoms: Some owners have experienced a noticeable hesitation or delay when accelerating, particularly from a stop or during low-speed maneuvers.
- Solution: Some have found relief with transmission software updates or adaptive learning resets.
- Estimated Cost to Fix: Software updates may be covered under warranty or cost around $100.
- Recalls: None Found
6-Speed Manual
No Issues Found
Suspension
- Magneride Damper Failure (If Equipped)
- Description/Symptoms: Mustangs equipped with the Magneride adaptive suspension system have occasionally experienced damper failures, leading to a bouncy or unstable ride.
- Solution: Replacement of the faulty damper(s) is necessary.
- Estimated Cost to Fix: $500 - $1,500+ per damper, depending on location and labor rates.
- Recalls: None Found
Electrical
- Infotainment System Freezing/Crashing
- Description/Symptoms: Owners have reported the SYNC 3 infotainment system freezing, crashing, or exhibiting slow response times.
- Solution: Software updates from Ford are the primary solution. Some owners have found temporary relief by performing a system reset (holding the power and skip forward buttons).
- Estimated Cost to Fix: Software updates are typically free if performed by the dealership or through over-the-air updates. Aftermarket solutions can vary in price.
- Recalls: None Found
- Battery Drain
- Description/Symptoms: Some owners have reported issues with the car’s battery draining prematurely, especially if the vehicle is not driven regularly.
- Solution: Diagnostics to identify the parasitic draw. Possible solutions include replacing the battery or the parasitic draw component, or addressing software glitches.
- Estimated Cost to Fix: $200 - $1,000+
- Recalls: None Found
Exterior
No Issues Found
Interior
- Rattling/Buzzing Noises
- Description/Symptoms: Some owners have reported rattling or buzzing noises emanating from various interior panels, particularly the dashboard or door panels.
- Solution: Locating and isolating the source of the rattle and securing the loose panels or components.
- Estimated Cost to Fix: Can range from DIY fixes to professional repair, costing anywhere from $0 - $500+.
- Recalls: None Found
Summary
The 2021 Ford Mustang, while generally a reliable and enjoyable sports car, does exhibit some common issues. Engine issues like oil consumption can be a concern, while transmission problems, particularly with the 10-speed automatic, may lead to frustrating driving experiences. Electrical glitches with the infotainment system are also relatively common. While some issues may be minor annoyances, others, such as transmission or engine problems, can be costly to repair. Careful inspection and a thorough test drive are recommended when considering a used 2021 Mustang.