Ford Mustang S550
Weaknesses, engine ratings and buying advice
The S550 was Ford’s most ambitious Mustang — the first with independent rear suspension, replacing the live axle that defined the car since 1964.
Three engines define the range. The 5.0L Coyote Gen 2 (2015–2017) and Gen 3 (2018–2024) is the GT’s heart — naturally aspirated, high-revving. The 2.3L EcoBoost is quicker than people admit but carbon buildup on intake valves needs management. The 5.2L Voodoo in the GT350 — flat-plane crank, 8,250 rpm, the collector car of this generation.
The MT82 manual is the S550’s greatest liability — class action filed. The 10R80 10-speed (2018+) shifts harshly enough for its own class action but works predictably. Find a Tremec TR-3160 Mach 1 if budget allows.
Track-used examples: check differential bushings (clunk = subframe removal), rear wheel bearings, brake rotors. GT350s: ask about oil consumption — Ford replaced engines on affected units.
2026 market: GT coupe $22,000–$35,000. GT350 $38,000–$55,000. GT500 $60,000+. EcoBoost $16,000–$24,000.
760 PS
Shelby GT500 · Benzin
The ultimate Mustang
Legendary!771 PS
5.2L Predator V8 Supercharged Benzin
3 weaknesses
Good ChoiceBody Variants
The Ford Mustang S550 is available as Convertible and Coupé — choose your body type for specific insurance data:
Generations
Engine Overview
The Ford Mustang S550 is available with 6 engine variants — from 290 to 771 hp.
3.7L V6 naturally aspirated 3726cc. Duratec 37. Base engine Mustang VI 2015-2017. Delivered to Europe/Germany in small numbers only. Discontinued 2017.
- !! Cam Phaser Rattle from 80,000 km
The 3.7L Duratec V6 (Mustang S197 V6, Kuga) shows rattle from hydraulic cam phasers at low oil pressure, like the Mustang V6 S197. Oil changes every 8,000 km are mandatory.
Symptoms: Rattle on cold start from the timing drive, sounds like a loose timing chain - !! Water Pump Shaft Seal Failure from 100,000 km
The external water pump on the 3.7L Duratec V6 is prone to shaft seal leaks at mileages over 100,000 km. Coolant loss and overheating damage result.
Symptoms: Coolant leak from the side under the engine, engine temperature rising, warning light - !! Internal Chain-Driven Water Pump Failure from 130,000 km
On the transversely mounted 3.7 V6 the timing chain drives the internal water pump. If the pump fails, coolant enters the crankcase directly — high risk of engine destruction if not stopped immediately.
Symptoms: Coolant loss without external leak, oil discoloured milky, temperature gauge rising.
+ 3 more engine weaknesses + vehicle weaknesses
2.3L EcoBoost in the Mustang S550. Sporty application with open-deck architecture. Known for head gasket issues in track use; later years fitted with improved parts.
- !! Cylinder head / liner issues under high load from 80,000 km
The open-deck 2.3L EcoBoost is inherently limited for intensive track use. Cylinder head and liners can crack under sustained high load, particularly in tuned applications.
Symptoms: Coolant loss, white exhaust smoke, overheating warning. - !! Low-pressure fuel pump (LPFP) failure from 120,000 km
LPFP failure is a known weak point across all EcoBoost engines. More frequently documented on Mustangs due to higher mileages in the US.
Symptoms: Power loss under full load, P0087, difficult starting. - !! Intake valve carbon buildup from direct injection from 50,000 km
The 2.3 EcoBoost in the Mustang uses direct injection only, so the intake valves are not cleaned by fuel. Deposits from around 40,000 km lead to power loss and rough running.
Symptoms: Judder and rough running especially during cold operation, poorer throttle response, misfires, slight power loss in the lower rev range
+ 3 more engine weaknesses + vehicle weaknesses
Gen 3 Coyote from 2018 — the key upgrade was dual fuel: direct injection plus port injection simultaneously. The port injectors keep the intake valves clean, eliminating the carbon buildup problem of DI-only engines. 460 hp at a 7,500 rpm redline. At idle the familiar Coyote tick, at part throttle a smooth V8 hum, at wide-open past 5,000 rpm the cross-plane character comes through — not as sharp as a flat-plane but fuller and deeper. Active exhaust valves let you choose between neighbor-friendly and antisocially loud. VCT solenoids on exhaust bank 2 are the known issue — Ford TSB 18-2360 covers it. High-pressure fuel pump can fail around 50k miles. Ignition coils are heat-sensitive, replace prophylactically if tracking the car. Tuning potential is enormous: Whipple Gen 5 supercharger gets 700+ hp with near-stock reliability. Oil changes 5W-20 every 5,000 miles.
- !! High-Pressure Fuel Pump Failing from 80,000 km
The direct injection high-pressure fuel pump on the 5.0 Coyote Gen3 can fail, leading to starting difficulties or power loss. Known failure tendency especially after 80,000 km.
Symptoms: Difficult cold starting, power loss, rough idle, check engine light - !! Head Gasket Failed — Overheating Damage from 80,000 km
The Coyote 5.0 V8 from 2011 is known for head gasket failures, especially after overheating events. Engine overtemperature from cooling system problems leads to warping of the aluminium head.
Symptoms: White smoke from exhaust; oil level rising with coolant mixed in (mayonnaise effect at oil filler cap); coolant loss without visible external leak. - !! Recall 2024: Intake Valve Fracture (Model Years 2021–2022)
2024 recall covering approximately 91,000 vehicles from model years 2021–2022 with the 5.0 Coyote due to possible intake valve fractures. Engine failure and power loss possible.
Symptoms: Sudden power loss; engine failure while driving; warning lights.
+ 6 more engine weaknesses + vehicle weaknesses
Ford's only production flat-plane crank V8. 526 hp, 8,250 RPM redline — the most exotic engine Mustang ever received. Hand-built in Romeo, Michigan. Class action for oil pump failures on 2016-2018. Track day limp mode after 15 minutes is a known limitation. The sound alone is worth the price of admission.
- !! Oil pickup tube failure (class action) from 50,000 km
Flat-plane crank vibrations fatigue the oil pickup tube mount until it cracks. Oil pump loses suction, crankshaft and bearings destroyed. Class action investigation for 2016-2018 models.
Symptoms: Sudden oil pressure loss, engine knock, catastrophic failure without warning - !! Recall: timing chain tensioner
Secondary timing chain tensioners not properly activated on some 2020 GT350s. Can cause chain to skip — catastrophic engine damage.
Symptoms: Timing chain rattle, rough running, check engine light - !! Excessive oil consumption (2017-2018) from 30,000 km
Some 2017-2018 Voodoo engines consume oil at alarming rates. Ford updated for 2019-2020. Check oil level before and after every drive.
Symptoms: Low oil warning, oil level drops between changes, blue smoke under hard acceleration
+ 3 more engine weaknesses + vehicle weaknesses
Ford's only production flat-plane crank V8. 526 hp, 8,250 RPM redline — the most exotic engine Mustang ever received. Hand-built in Romeo, Michigan. Class action for oil pump failures on 2016-2018. Track day limp mode after 15 minutes is a known limitation. The sound alone is worth the price of admission.
- !! Oil pickup tube failure (class action) from 50,000 km
Flat-plane crank vibrations fatigue the oil pickup tube mount until it cracks. Oil pump loses suction, crankshaft and bearings destroyed. Class action investigation for 2016-2018 models.
Symptoms: Sudden oil pressure loss, engine knock, catastrophic failure without warning - !! Recall: timing chain tensioner
Secondary timing chain tensioners not properly activated on some 2020 GT350s. Can cause chain to skip — catastrophic engine damage.
Symptoms: Timing chain rattle, rough running, check engine light - !! Excessive oil consumption (2017-2018) from 30,000 km
Some 2017-2018 Voodoo engines consume oil at alarming rates. Ford updated for 2019-2020. Check oil level before and after every drive.
Symptoms: Low oil warning, oil level drops between changes, blue smoke under hard acceleration
+ 3 more engine weaknesses + vehicle weaknesses
760 hp cross-plane crank V8 with 2.65L Roots-type supercharger. Most powerful production Mustang ever. Stock internals handle 760 hp reliably — failures occur primarily on 1,000+ hp builds. DCT-only (Tremec 7-speed dual-clutch). Timing chain tensioner recall on early 2020 production.
- !! Recall: timing chain tensioner (2020)
Same tensioner issue as Voodoo — secondary tensioners not properly activated on early 2020 GT500 production.
Symptoms: Timing chain noise, potential chain skip, catastrophic engine damage - !! Engine block failure under extreme power
At 1,000+ hp (Stage 2+ tunes), stock internals cannot handle the stress. Documented block failures with holes near motor mounts. Only affects heavily modified cars.
Symptoms: Catastrophic engine failure at WOT, holes in block, broken pistons/rods - ! Supercharger heat soak from 50,000 km
Roots-type supercharger generates significant intake heat under sustained high-load driving. Intercooler struggles at track pace. Power drops noticeably after repeated pulls.
Symptoms: Power fade after 3-4 consecutive pulls, higher intake temps, reduced boost efficiency
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Automatic gearbox shifts harshly and slips The 6- or 10-speed automatic gearbox in the Mustang S550 exhibits harsh shift clunks, slip and delayed gear changes. Total failure occurs from 80,000–120,000 km in some cases. Cooling problems and incorrect fluid specification can contribute to failure. Symptoms: Harsh shifts, slip under acceleration, delayed gear change; in the worst case no forward drive at all. from 90,000 km | High | |
| 10R80 10-Speed Automatic Harsh Shifts and Delays (2018+) Known since 2018 introduction: 10R80 shifts harshly, hesitates, or lurches unexpectedly. Class action filed 2023. TSB 22-2139 addresses the issue via software, does not fully resolve it. Symptoms: Jerking, banging when shifting, delayed gear change, vehicle surges from 60,000 km | High | |
| MT-82 Synchros Wear Prematurely (2015–2017) Same MT-82 issues as in the S197, especially in early S550 models (2015–2017). Aluminum shift forks redesigned in 2019. Symptoms: Gear hard to engage, transmission jumps out of gear, grinding when shifting from 60,000 km | High |
Top Reported Issues
Alternatives
BMW M2 G87
Sports Car (2022–2026)
Subaru WRX VB
Sports Car (2022–2026)
Subaru BRZ ZD8
Sports Car (2022–2026)
Toyota GR86 ZN8
Sports Car (2022–2025)
Audi e-tron GT J1
Sports Car (2021–2024)
Audi RS e-tron GT J1
Sports Car (2021–2024)
Explore more
Known Problems and Issues +
A total of 47 weaknesses have been documented for the Ford Mustang S550 (2015–2024) — 30 engine-related and 17 vehicle-related. Typical issues affect Gearbox, Body, HVAC, Suspension. Considered reliable: Predator-5.2-SC (5.2L Predator V8 Supercharged).
Mustang (Coyote-Gen3, 2015–2017) — Be Careful: High-Pressure Fuel Pump Failing, Head Gasket Failed — Overheating Damage, Recall 2024: Intake Valve Fracture (Model Years 2021–2022). Power: 416–421 PS.
Mustang (Coyote-Gen3, 2015–2017) — Be Careful: High-Pressure Fuel Pump Failing, Head Gasket Failed — Overheating Damage, Recall 2024: Intake Valve Fracture (Model Years 2021–2022). Power: 421 PS.
Mustang (EcoBoost-2.3-Mustang, 2015–2017) — Be Careful: Cylinder head / liner issues under high load, Low-pressure fuel pump (LPFP) failure, Intake valve carbon buildup from direct injection. Power: 317 PS.
Mustang (Duratec-37, 2015–2017) — Be Careful: Cam Phaser Rattle, Water Pump Shaft Seal Failure, Internal Chain-Driven Water Pump Failure. Power: 309 PS.
Mustang (Voodoo-5.2-FPC, 2016–2020) — Be Careful: Oil pickup tube failure (class action), Recall: timing chain tensioner, Excessive oil consumption (2017-2018). Power: 526 PS.
Mustang (Coyote-Gen3, 2018–2024) — Be Careful: High-Pressure Fuel Pump Failing, Head Gasket Failed — Overheating Damage, Recall 2024: Intake Valve Fracture (Model Years 2021–2022). Power: 460 PS.
Mustang (EcoBoost-2.3-Mustang, 2018–2024) — Be Careful: Cylinder head / liner issues under high load, Low-pressure fuel pump (LPFP) failure, Intake valve carbon buildup from direct injection. Power: 290–291 PS.
What to watch out for with the Ford Mustang? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Ford Mustang S550 have? +
What should I look for when buying a used Ford Mustang S550? +
Which engine is recommended? +
Which Ford Mustang S550 engine is the most reliable? +
Which Ford Mustang S550 engine is the most fun? +
Is the Ford Mustang S550 worth buying used? +
What horsepower variants are available for the Ford Mustang S550? +
Last updated: February 2026 · All information without guarantee