2021 Ford Mustang: True Cost of Ownership (5-Year Breakdown)
The 2021 Ford Mustang is America's best-selling sports car, offering V6, EcoBoost four-cylinder, GT V8, and Mach 1 trims to suit budgets from practical to performance-obsessed. At around $25,000 on the used market, it's an attainable rear-wheel-drive coupe that delivers genuine driving excitement. It appeals most to enthusiasts who want style and performance without supercar pricing, but prospective buyers should understand the real ongoing costs before signing.
Monthly cost breakdown
The 2021 Mustang depreciates faster than average for a sports car, losing roughly 35-40% of its value over five years; EcoBoost models depreciate more steeply than GT V8 variants, which retain stronger demand on the used market.
Pros
- Purchase price of ~$25,000 is well below original MSRP, meaning the steepest depreciation has already been absorbed by the first owner
- Relatively affordable routine maintenance with widely available parts and a massive aftermarket keeping service costs competitive
- Strong enthusiast community means DIY resources and independent specialist shops can significantly cut repair costs
- GT350 and Mach 1 V8 variants hold resale value noticeably better, offering a hedge against further depreciation if you choose wisely
Cons
- Fuel costs are above average — the EcoBoost returns only 21-28 mpg combined while the GT V8 averages just 16-21 mpg, making fuel a significant monthly expense
- Insurance premiums are 20-30% higher than average for a two-door sports car, especially for drivers under 35
- Rear-wheel drive and performance-tuned suspension make winter driving impractical without a second vehicle or seasonal tire investment adding cost
- Tire wear is accelerated on GT and performance variants; a set of rear summer performance tires can cost $400-$700 and may last only 20,000-25,000 miles
Common problems to watch for
- EcoBoost 2.3L turbocharged engine is known for carbon buildup on intake valves requiring periodic walnut blasting around 60,000-80,000 miles
- Rear independent suspension (available on select trims) and solid axle variants both show premature bushing wear on hard-driven examples
- IRS (independent rear suspension) half-shaft and differential seal leaks reported on higher-mileage 2021 units
- SYNC 3 infotainment system can freeze or reboot unexpectedly, often requiring a software update or module replacement
- Paint quality complaints including thin clear coat prone to rock chips and swirl marks, especially on darker exterior colors
The verdict
The 2021 Ford Mustang is a reasonably smart buy at $25,000 for someone who goes in with eyes open — the purchase price is good value, but fuel, insurance, and tire costs push the true monthly figure well above what many buyers expect. The EcoBoost coupe keeps ongoing costs lowest, while the GT V8 offers better long-term resale. If you can live with the compromises, the Mustang delivers a level of driving enjoyment few cars match at this price point.
Best for: The ideal buyer is an enthusiast aged 25 or older who drives primarily in mild climates, has a second daily driver for winter months, and values driving engagement and brand heritage over fuel economy or practicality.
Other model years
Frequently asked questions
How much does it cost to insure a 2021 Ford Mustang?
Expect to pay roughly $1,800-$2,400 per year ($150-$200/month) for full coverage on a 2021 Mustang, though rates vary significantly by age, location, and driving record — younger drivers in urban areas can see premiums exceeding $3,000 annually.
What is the fuel cost for a 2021 Ford Mustang at 12,000 miles per year?
The EcoBoost four-cylinder averages about 24 mpg combined, costing roughly $1,400/year at current gas prices, while the GT V8 at 18 mpg combined runs closer to $1,900/year — budget $1,500-$2,000 annually depending on trim and driving style.
Is the 2021 Mustang EcoBoost or GT cheaper to own?
The EcoBoost is cheaper month-to-month thanks to better fuel economy and slightly lower insurance rates, but the GT V8 typically holds resale value better, so the five-year total cost of ownership can be surprisingly close between the two trims.
What are the most common repairs on a 2021 Ford Mustang?
The most frequent out-of-pocket repairs include carbon buildup cleaning on the EcoBoost engine (~$300-$500), suspension bushing replacement (~$400-$800), and infotainment module issues (~$200-$600); many 2021 models may still have remaining powertrain warranty coverage worth verifying at purchase.
How fast does a 2021 Ford Mustang depreciate?
A 2021 Mustang purchased new for around $38,000 is now selling for roughly $24,000-$27,000, representing about 35-38% depreciation in three to four years; at the $25,000 used entry point you'll likely lose another $8,000-$10,000 over the next five years.
Is a 2021 Ford Mustang a good daily driver?
It can work as a daily driver in mild climates, but the firm ride, limited rear visibility, cramped rear seats, small trunk, and poor performance on snow or ice make it a challenging sole vehicle — it's best suited as a second car or for drivers in Sun Belt states.
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Estimates are AI-generated guidance based on typical costs for this year, make and model.