Sixth generation · S550 · 2015–2023
2021Ford Mustang
The S550, the first Mustang with independent rear suspension as standard, built 2015–2023.
Photo: “2021 Ford Mustang Mach 1 6.jpg” by Calreyn88 / Wikimedia Commons, licensed under CC BY-SA 4.0. Cropped to 16:9.
Quick facts
- Engines
- 5offered2.3 L EcoBoost turbo I4 (base) → 5.2 L supercharged "Predator" V8 (Shelby GT500)
- Top output
- 760hp5.2 L supercharged "Predator" V8 (Shelby GT500)
- Base price
- $27,155EcoBoost fastback
- Today
- ≈$31,400inflation-adjusted MSRP, not market value
Body stylesFastback coupe · Convertible
Start here
What do you need to know?
This page covers the whole 2021 Ford Mustang model year. Choose your task first; exact trims and engines are separated where the factory offered different versions.
Documented lineup
Find your exact 2021 Mustang
Start with a family, body style, or engine. Every card opens the facts and maintenance information for that factory version.
Exact factory pairings documentedHow this lineup was verified
These source-backed records identify published body, engine, and transmission combinations. Exact pairings do not by themselves assert that every factory option or special edition is represented.
EcoBoost8 exact versions
EcoBoost Fastback 6MT
- Body
- Fastback
- Engine
- 2.3L EcoBoost inline-four
- Gearbox
- 6-speed manual
- Built
- Regular production
EcoBoost Fastback 10AT
- Body
- Fastback
- Engine
- 2.3L EcoBoost inline-four
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
EcoBoost Fastback High Performance 6MT
- Body
- Fastback
- Engine
- 2.3L High Performance EcoBoost inline-four
- Gearbox
- 6-speed manual
- Built
- Regular production
EcoBoost Fastback High Performance 10AT
- Body
- Fastback
- Engine
- 2.3L High Performance EcoBoost inline-four
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
EcoBoost Convertible 6MT
- Body
- Convertible
- Engine
- 2.3L EcoBoost inline-four
- Gearbox
- 6-speed manual
- Built
- Regular production
EcoBoost Convertible 10AT
- Body
- Convertible
- Engine
- 2.3L EcoBoost inline-four
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
EcoBoost Convertible High Performance 6MT
- Body
- Convertible
- Engine
- 2.3L High Performance EcoBoost inline-four
- Gearbox
- 6-speed manual
- Built
- Regular production
EcoBoost Convertible High Performance 10AT
- Body
- Convertible
- Engine
- 2.3L High Performance EcoBoost inline-four
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
EcoBoost Premium8 exact versions
EcoBoost Premium Fastback 6MT
- Body
- Fastback
- Engine
- 2.3L EcoBoost inline-four
- Gearbox
- 6-speed manual
- Built
- Regular production
EcoBoost Premium Fastback 10AT
- Body
- Fastback
- Engine
- 2.3L EcoBoost inline-four
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
EcoBoost Premium Fastback High Performance 6MT
- Body
- Fastback
- Engine
- 2.3L High Performance EcoBoost inline-four
- Gearbox
- 6-speed manual
- Built
- Regular production
EcoBoost Premium Fastback High Performance 10AT
- Body
- Fastback
- Engine
- 2.3L High Performance EcoBoost inline-four
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
EcoBoost Premium Convertible 6MT
- Body
- Convertible
- Engine
- 2.3L EcoBoost inline-four
- Gearbox
- 6-speed manual
- Built
- Regular production
EcoBoost Premium Convertible 10AT
- Body
- Convertible
- Engine
- 2.3L EcoBoost inline-four
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
EcoBoost Premium Convertible High Performance 6MT
- Body
- Convertible
- Engine
- 2.3L High Performance EcoBoost inline-four
- Gearbox
- 6-speed manual
- Built
- Regular production
EcoBoost Premium Convertible High Performance 10AT
- Body
- Convertible
- Engine
- 2.3L High Performance EcoBoost inline-four
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
GT2 exact versions
GT Premium4 exact versions
GT Premium Fastback 6MT
- Body
- Fastback
- Engine
- 5.0L Ti-VCT V8
- Gearbox
- 6-speed manual with rev matching
- Built
- Regular production
GT Premium Fastback 10AT
- Body
- Fastback
- Engine
- 5.0L Ti-VCT V8
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
GT Premium Convertible 6MT
- Body
- Convertible
- Engine
- 5.0L Ti-VCT V8
- Gearbox
- 6-speed manual with rev matching
- Built
- Regular production
GT Premium Convertible 10AT
- Body
- Convertible
- Engine
- 5.0L Ti-VCT V8
- Gearbox
- 10-speed SelectShift automatic
- Built
- Regular production
Mach 1 600A2 exact versions
Mach 1 Premium 700A2 exact versions
No factory configuration matches those filters.
The 2021 model year
Overview
The Mach 1 returned for the first time since 2004, slotting in as the GT's hard-edged track option and effectively replacing the departed Bullitt. It paired a 480 hp 5.0 V8 with cooling and aero borrowed from the GT350 and GT500 (oil, transmission and rear-axle coolers; a front splitter and rear spoiler), available with either a Tremec 6-speed manual or the 10-speed automatic. The GT500 continued at 760 hp.
Specifications
- Engines
- 2.3 L EcoBoost turbo I4 (base)310 hp
- 2.3 L EcoBoost High Performance Package330 hp
- 5.0 L "Coyote" V8 (GT)460 hp
- 5.0 L V8 (Mach 1; returns)480 hp
- 5.2 L supercharged "Predator" V8 (Shelby GT500)760 hp
- Transmissions
- 6-speed manual (Mach 1: Tremec TR-3160), 10-speed automatic (10R80), Shelby GT500: 7-speed dual-clutch (Tremec TR-9070) only
- Body styles
- Fastback coupe, Convertible
- Base price
- $27,155 (EcoBoost fastback)See what that's worth today →
Year over year
What changed
- The Mach 1 returned (first since 2004) as the GT's track-focused variant, replacing the Bullitt.
- Mach 1: 480 hp 5.0, GT350/GT500-derived cooling and aero; available with the Tremec 6-speed manual or 10-speed auto.
- GT350 / GT350R were gone; the GT500 (760 hp) continued.
Worth knowing
Notable
- Mach 1 nameplate revival — a well-equipped, collectible GT-based track car.
- GT500 continued as the supercharged flagship.
Living with it
Reliability & ownership notes
- The Mach 1 adds dedicated oil, transmission and differential cooling versus a standard GT — a genuine durability benefit on track.
- Manual-equipped Mach 1s use the Tremec TR-3160 from the GT350, a step up from the standard MT82.
What it costs now
Price today
Current market value
We don't publish a market estimate for the 2021 model year yet. A valuation ships here only when it can be sourced and dated — we'd rather show nothing than a number we can't stand behind.
Original MSRP adjusted for inflation (CPI, 2024); not the car's current market/collector value. Source: U.S. Bureau of Labor Statistics, CPI-U (U.S. city average, all items), annual average.
Maintenance & service parts
Keep your 2021 Mustang on the road
Start with the service interval, then match the engine or exact version you own. Order links appear only when a catalog-backed part number is available, and every listing still needs a fitment check.
Service desk
What this car needs & when
Use this as a service-planning checklist for 2021 Ford Mustang. Start with the interval, confirm which engine or configuration you have, then use an exact ordering reference when one is verified.
- Service topics
- 10
- Factory intervals
- 7
- Fitment-scoped
- 10
- Exact references
- 6
Before orderingIdentify your engine, options and build date.Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.
Engine oil and filter
Sourced interval available
Change when directed by the Intelligent Oil-Life Monitor; never exceed the stated maximum.
Source: Ford — 2021 Mustang Owner's Manual · Scheduled Maintenance — Normal Scheduled Maintenance and Other Maintenance Items · checked
Engine oil filter
Exact reference available
Exact engine-specific Motorcraft references from Ford's model-year parts table.
2.3L EcoBoost
Motorcraft FL-910-S
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft FL-910-S
Qty. 1 · Engine oil filter · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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5.0L V8
Motorcraft FL-500-S
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft FL-500-S
Qty. 1 · Engine oil filter · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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Shelby GT500 5.2L supercharged V8
Motorcraft FL-2087-A
Source: Ford Motorcraft — Oil Applications and Crankcase Capacities Chart, version 23 (July 2026) · Page 2, SAE 5W-50 table — 5.2L 4V Mustang GT500 (2020–2022); model-year column marked · checked
Verified ordering references
- Service replacementMotorcraft FL-2087-A
Qty. 1 · Engine oil filter · current
Ford's current chart marks this model-year and engine application; verify the VIN, installed engine, and track-package requirements before ordering.
Catalog: Ford Motorcraft — Oil Applications and Crankcase Capacities Chart, version 23 (July 2026) · Page 2, SAE 5W-50 table — 5.2L 4V Mustang GT500 (2020–2022); model-year column marked · checked
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Cabin air filter
Exact reference available
Source: Ford — 2021 Mustang Owner's Manual · Scheduled Maintenance — Normal Scheduled Maintenance and Other Maintenance Items · checked
2.3L EcoBoost
Motorcraft FP-78
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft FP-78
Qty. 1 · Cabin air filter · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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5.0L V8
Motorcraft FP-78
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft FP-78
Qty. 1 · Cabin air filter · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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Engine air filter
Exact reference available
Source: Ford — 2021 Mustang Owner's Manual · Scheduled Maintenance — Normal Scheduled Maintenance and Other Maintenance Items · checked
2.3L EcoBoost
Motorcraft FA-1918
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft FA-1918
Qty. 1 · Engine air-filter element · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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5.0L GT
Motorcraft FA-1918
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft FA-1918
Qty. 1 · Engine air-filter element · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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5.0L Mach 1
Motorcraft FA-1922
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft FA-1922
Qty. 1 · Engine air-filter element · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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Engine coolant
Sourced interval available
Initial replacement at ten years or 200,000 miles; thereafter every five years or 100,000 miles.
Source: Ford — 2021 Mustang Owner's Manual · Scheduled Maintenance — Normal Scheduled Maintenance and Other Maintenance Items · checked
Spark plugs
Exact reference available
Source: Ford — 2021 Mustang Owner's Manual · Scheduled Maintenance — Normal Scheduled Maintenance and Other Maintenance Items · checked
2.3L EcoBoost
Motorcraft SP-550
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft SP-550
Qty. 1 · Spark plug · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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5.0L V8
Motorcraft SP-551
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft SP-551
Qty. 1 · Spark plug · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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Transmission fluid
Sourced interval available
The normal schedule calls for both automatic fluid/filter service and manual transmission fluid at this interval.
Source: Ford — 2021 Mustang Owner's Manual · Scheduled Maintenance — Normal Scheduled Maintenance and Other Maintenance Items · checked
Battery
Exact reference available
2.3L EcoBoost
Motorcraft BXT-96R-590
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft BXT-96R-590
Qty. 1 · Battery · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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5.0L V8
Motorcraft BXT-96R-590
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft BXT-96R-590
Qty. 1 · Battery · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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Windshield wiper blades
Exact reference available
2.3L EcoBoost — driver side
Motorcraft WW-2160
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft WW-2160
Qty. 1 · Driver-side windshield wiper blade · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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5.0L V8 — driver side
Motorcraft WW-2160
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft WW-2160
Qty. 1 · Driver-side windshield wiper blade · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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2.3L EcoBoost — passenger side
Motorcraft WW-1964
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft WW-1964
Qty. 1 · Passenger-side windshield wiper blade · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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5.0L V8 — passenger side
Motorcraft WW-1964
Source: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
Verified ordering references
- Service replacementMotorcraft WW-1964
Qty. 1 · Passenger-side windshield wiper blade · catalog-listed
Ford's model-year factory table lists this part for the stated application; confirm the installed engine, trim, and VIN before ordering.
Catalog: Ford — 2021 Mustang Owner's Manual · Printed pages 340–342 — Motorcraft Parts engine tables · checked
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Brake fluid
Sourced interval available
Source: Ford — 2021 Mustang Owner's Manual · Scheduled Maintenance — Normal Scheduled Maintenance and Other Maintenance Items · checked
Collect
Bring this model year home
Find a scale model using the exact year, make, and model—not a generic generation search.
Famous variants this year
Sources
Other Sixth generation years
Explore the S550 generation →All Sixth generation · S550 years →