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!Body 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.
Free-revving naturally aspirated V6 with linear power delivery and a gutsy note higher up. The timing chain is long-lived and the core is robust. Without forced induction it stays uncomplicated, but it drinks a fair amount when driven hard. Watch the coolant and keep the oil fresh and it lasts a very long time. Characterful and mechanically low on weak spots.
- !! 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
Performance-oriented turbo four-cylinder with timing chain and strong power delivery. It pushes hard and gives sporty response across a broad rev range. Boost pressure and the cooling system want watching, and clean oil is essential for turbo and chain. Direct injection can promote deposits. A powerful drive that rewards consistent care.
- !! 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. - !! Coolant intrusion into cylinders (open-deck block) from 80,000 km
The open-deck design leaves thin spots between the cylinder bores where the head gasket sinks and cracks, letting coolant seep into the combustion chamber. It corrodes cylinder walls and causes catastrophic failure. Subject of a US class action, independent of the Focus RS recall.
Symptoms: Gradual coolant loss with no visible leak, white exhaust smoke, power loss, rough running, oil dilution, and in late stages overheating or engine fire. - !! Low-pressure fuel pump failure – recall 25S75/25V455 from 40,000 km
Internal jet-pump contamination makes the in-tank low-pressure pump overheat and fail in warm-tank, low-fuel conditions. The engine loses fuel pressure and stalls without warning. Recall covers 850,000+ vehicles (model years 2021–2023).
Symptoms: Sudden engine stall with no warning, part-throttle stumble, hesitation after restart, intermittent reduced-power mode, worst in hot weather with a low tank.
+ 6 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. - !! VCT Solenoid Bank 2 Exhaust (TSB 18-2360) from 40,000 km
Ford TSB 18-2360 for 2018/2019 Coyote Gen3: Bank 2 exhaust VCT control solenoid faulty. Causes power loss and idle problems. Solenoid replacement by the dealer.
Symptoms: Rough idle; engine stumbling; power loss; ticking at bank 2; fault code P0022.
+ 7 more engine weaknesses + vehicle weaknesses
High-revving 5.2-litre naturally aspirated V8 with a flat-plane crankshaft — the defining difference from the ordinary Coyote, which runs a cross-plane crank. The 180-degree crank throws give an even cross-bank firing order and that screaming, almost race-car-like wail above 5000 rpm. It spins cleanly to an 8250 rpm redline, with power arriving almost entirely up top while the bottom end stays deliberately tame. The cylinder bores are not sleeved but coated by plasma transferred wire arc (PTWA) spraying, which saves weight and improves heat transfer. Crank and rods are forged, and the oil system is generously sized because a flat-plane V8 inherently vibrates more and is harder on its accessories. That very vibration character is the killer detail: it is intentional and part of the experience, but it works the bearings, belts and bolt-on components harder than a smooth cross-plane. Anyone driving it hard should watch the oil level closely — oil consumption and oil supply are the critical points under sustained full throttle.
- !! 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 - !! Recall 16S40: oil cooler tube can separate from 30,000 km
About 8,000 2015–2017 GT350/GT350R (built 02/2015–08/2016) have an improperly crimped oil cooler tube between the oil filter housing and the cooler. The hose can separate, causing sudden loss of oil pressure and engine failure, plus fire risk near an ignition source. Ford recall 16S40 / NHTSA 16V779, tube replaced free of charge.
Symptoms: Sudden oil pressure loss, oil pressure warning light, oil trail under the car, burning oil smell, in extreme cases engine knock and seizure. Check recall status by VIN before any repair.
+ 7 more engine weaknesses + vehicle weaknesses
High-revving 5.2-litre naturally aspirated V8 with a flat-plane crankshaft — the defining difference from the ordinary Coyote, which runs a cross-plane crank. The 180-degree crank throws give an even cross-bank firing order and that screaming, almost race-car-like wail above 5000 rpm. It spins cleanly to an 8250 rpm redline, with power arriving almost entirely up top while the bottom end stays deliberately tame. The cylinder bores are not sleeved but coated by plasma transferred wire arc (PTWA) spraying, which saves weight and improves heat transfer. Crank and rods are forged, and the oil system is generously sized because a flat-plane V8 inherently vibrates more and is harder on its accessories. That very vibration character is the killer detail: it is intentional and part of the experience, but it works the bearings, belts and bolt-on components harder than a smooth cross-plane. Anyone driving it hard should watch the oil level closely — oil consumption and oil supply are the critical points under sustained full throttle.
- !! 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 - !! Recall 16S40: oil cooler tube can separate from 30,000 km
About 8,000 2015–2017 GT350/GT350R (built 02/2015–08/2016) have an improperly crimped oil cooler tube between the oil filter housing and the cooler. The hose can separate, causing sudden loss of oil pressure and engine failure, plus fire risk near an ignition source. Ford recall 16S40 / NHTSA 16V779, tube replaced free of charge.
Symptoms: Sudden oil pressure loss, oil pressure warning light, oil trail under the car, burning oil smell, in extreme cases engine knock and seizure. Check recall status by VIN before any repair.
+ 7 more engine weaknesses + vehicle weaknesses
The 5.2 carries Voodoo genes but, unlike its naturally aspirated sibling, spins on a conventional cross-plane crank — not a high-revving flat-plane screamer but a deep, brutal V8 hammer. On top sits a 2.65-litre Eaton TVS Roots blower with its own air-to-water intercooler, delivering power seamlessly and lag-free to the rear axle from idle. Block and heads were reinforced over the naturally aspirated unit (longer head bolts, an extra layer in the head gasket), yet the aluminium block remains the natural ceiling: enormously strong from the factory, but the first component to give up once tuning pushes past roughly 900 hp. The biggest enemy in daily use and on track is heat soak — the blower and the modestly sized cooling system overheat quickly under sustained wide-open throttle, at which point the ECU pulls power based on the cylinder-head temperature sensor. Intake air temperatures climb steeply without the Track Pack cooling. Anyone driving the car hard will struggle to avoid fitting a larger heat exchanger and keeping an eye on the intercooler coolant level. Take oil-change intervals seriously, warm it through before going wide open, and watch the intercooler coolant — then the powertrain holds up remarkably well.
- !! 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 - !! DCT cooler line leak / gearbox running low from 5,000 km
The cooler lines on the Tremec 7-speed dual-clutch transmission lose fluid early, often around 3,000 miles. The gearbox ships as a sealed unit and can be left underfilled once the lines are connected — loss quickly causes limp mode and overheating.
Symptoms: Oil patch under the car, transmission over-temperature warning, jerking or limp mode, loss of several quarts of gearbox fluid.
+ 8 more engine weaknesses + vehicle weaknesses
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
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Known Problems and Issues +
A total of 63 weaknesses have been documented for the Ford Mustang S550 (2015–2024) — 46 engine-related and 17 vehicle-related. Typical issues affect Gearbox, Body, HVAC, Suspension.
Mustang (Coyote-Gen3, 2015–2017) — Be Careful: High-Pressure Fuel Pump Failing, Head Gasket Failed — Overheating Damage, VCT Solenoid Bank 2 Exhaust (TSB 18-2360). Power: 416–421 PS.
Mustang (Coyote-Gen3, 2015–2017) — Be Careful: High-Pressure Fuel Pump Failing, Head Gasket Failed — Overheating Damage, VCT Solenoid Bank 2 Exhaust (TSB 18-2360). Power: 421 PS.
Mustang (EcoBoost-2.3-Mustang, 2015–2017) — Be Careful: Cylinder head / liner issues under high load, Coolant intrusion into cylinders (open-deck block), Low-pressure fuel pump failure – recall 25S75/25V455. 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, Recall 16S40: oil cooler tube can separate. Power: 526 PS.
Mustang (Coyote-Gen3, 2018–2024) — Be Careful: High-Pressure Fuel Pump Failing, Head Gasket Failed — Overheating Damage, VCT Solenoid Bank 2 Exhaust (TSB 18-2360). Power: 460 PS.
Mustang (EcoBoost-2.3-Mustang, 2018–2024) — Be Careful: Cylinder head / liner issues under high load, Coolant intrusion into cylinders (open-deck block), Low-pressure fuel pump failure – recall 25S75/25V455. Power: 290–291 PS.
Mustang (Predator-5.2-SC, 2020–2022) — Be Careful: Recall: timing chain tensioner (2020), Engine block failure under extreme power, DCT cooler line leak / gearbox running low. Power: 760 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
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Last updated: February 2026 · All information without guarantee