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2021–2024 FORD BRONCO SPORT

2.0L I4 EcoBoost•4WD•AUTOMATIC•gas•turbo
5-Year Cost of Ownership
$22,072 maintenance + known platform issues
~$4,414/yr · 370¢/mile equivalent · $8,230 maintenance + $11,242 expected platform issues
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1.5L I3 EcoBoost
Common Problems & Known Issues

The 2021-2024 Bronco Sport with the 2.0L EcoBoost is plagued by catastrophic engine failures due to coolant intrusion into cylinders, plus transmission oil cooler leaks that compound the problem. Many units fail well under 100,000 miles, often requiring complete engine rebuilds or replacements.

Coolant-Into-Cylinder Engine Failure (Open-Deck Block Design)

Common · high severity
Typical onset: 30,000-80,000 mi
Symptoms: White smoke from exhaust on cold starts, Unexplained coolant loss with no external leaks, Misfires and rough idle that worsen over time, Milky oil on dipstick or oil cap, Check engine light with cylinder misfire codes
Fix: The open-deck block design allows cylinder head gaskets to fail or coolant to seep between block and liner. Coolant enters combustion chamber, hydrolock damages pistons/rods, scoring cylinders. Repair requires complete engine rebuild (pistons, rings, bearings, head gaskets, machine work) or short block replacement. 20-30 labor hours for rebuild, 12-18 for short block swap.
Estimated cost: $8,000-15,000

Transmission Oil Cooler Failure and Cross-Contamination

Common · high severity
Typical onset: 40,000-90,000 mi
Symptoms: Transmission fluid in coolant reservoir (pink/red tint), Coolant in transmission pan (milky ATF), Harsh shifts or slipping gears, Overheating transmission or engine, Reduced power and limp mode
Fix: Internal oil cooler inside radiator fails, mixing ATF and coolant. Requires new radiator, transmission fluid flush (often multiple flushes), sometimes new transmission if contamination caused clutch pack damage. If caught early: radiator + flush = 4-6 hours. If trans damaged: add 10-15 hours for rebuild or replacement.
Estimated cost: $1,200-6,500

Fuel Injection System Failures and Fuel Pump Module Issues

Occasional · high severity
Typical onset: 20,000-60,000 mi
Symptoms: Hard starting or extended cranking, Intermittent stalling at idle or while driving, Loss of power under acceleration, Check engine light with fuel pressure/trim codes, Engine runs rough or won't start at all
Fix: Multiple recalls for fuel pump control module and fuel injection system. Failures range from faulty pump module (2-3 hours to replace, requires dropping tank) to injector failures requiring individual or full set replacement (3-5 hours). Some units need fuel filter and lines inspected for debris.
Estimated cost: $800-2,800

Transmission Control Module (TCM) Failures

Occasional · medium severity
Typical onset: 25,000-70,000 mi
Symptoms: Transmission won't shift out of park, Stuck in one gear (usually 3rd or limp mode), Erratic shifting or delayed engagement, Check engine and transmission warning lights, Complete loss of forward gears
Fix: TCM software corruption or hardware failure. Two recalls issued. Sometimes reflash solves it (1 hour), but often needs module replacement and relearn procedure (2-3 hours). Verify it's not related to oil cooler contamination first.
Estimated cost: $150-1,800

Transmission Mount Failure

Common · low severity
Typical onset: 40,000-80,000 mi
Symptoms: Excessive vibration at idle in drive, Clunking when shifting from park to drive/reverse, Rocking sensation during acceleration or braking, Visible engine/trans movement under hood during throttle blips
Fix: Rubber mount deteriorates prematurely, especially on vehicles used off-road. Replacement is straightforward: support trans, unbolt old mount, install new. 1.5-2.5 hours depending on access.
Estimated cost: $300-600

Engine Block Heater Electrical Fires

Rare · high severity
Symptoms: Burning smell near front of vehicle when plugged in, Melted wiring or connector at block heater cord, Smoke from engine bay, Block heater doesn't warm engine
Fix: Recall issued for faulty block heater wiring that can short and cause fires. Dealer recall repair involves replacing heater element and wiring harness. If fire occurred, expect additional harness and component damage requiring 4-8 hours of diagnosis and repair.
Estimated cost: $0 (recall) or $800-2,000 if fire damage
Owner tips
  • Check coolant level obsessively—weekly for first 60k miles. Any unexplained loss means pull the plugs and inspect for coolant fouling immediately.
  • Inspect coolant reservoir for ATF contamination (pink/red tint) every oil change. Catch oil cooler failure before it kills the transmission.
  • Avoid extended idle and towing near max capacity—these engines run hot and the open-deck block is unforgiving.
  • Keep all fuel system recalls completed; many failures strand you without warning.
  • If buying used, get a pre-purchase inspection with compression test and leak-down test. A failing engine can look fine until it doesn't.
Hard pass unless you're prepared for a $10k+ engine rebuild lottery; the 2.0L EcoBoost in this chassis has catastrophic design flaws that Ford has not adequately addressed.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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