Ford's 2.3L (and related 1.5L and 2.0L) EcoBoost engines develop cracks in the cylinder head or block that allow coolant to seep into combustion. Owners report misfires, sweet exhaust smell, disappearing coolant, white smoke, and ultimately a hydrolocked engine. Plaintiffs in active class actions (<em>Garbacz v. Ford</em> and related cases) seek warranty extension and damages.
EcoBoost coolant intrusion shows as falling coolant level with no external leak. If your overflow tank drops between services, get a leak-down and combustion-gas test on each cylinder before driving further.
Ford's 2.3L EcoBoost (Mustang EcoBoost, Focus RS, Bronco, Ranger, Explorer 2.3L) and its 1.5L / 2.0L siblings (Escape, Edge, Fusion, Lincoln MKC, MKZ) use a turbocharged direct-injection design with tight head/block thermal budgets. Some castings develop cracks between coolant passages and combustion chambers. Coolant slowly migrates into the cylinders, fouls plugs, causes misfires, and can hydrolock the engine on a cold start. Earlier 1.5L and 2.0L applications were subject of <em>Garbacz v. Ford</em> and additional consolidated actions; 2.3L claims are emerging on Bronco, Ranger, and Mustang.
| Model | Years | Engine | TSB / Class Action | Severity |
|---|---|---|---|---|
| Ford Escape | 2014-2019 | 1.5L / 2.0L EcoBoost | Garbacz v. Ford | Critical |
| Ford Fusion | 2013-2019 | 1.5L / 2.0L EcoBoost | Garbacz v. Ford | Critical |
| Ford Edge | 2015-2018 | 2.0L EcoBoost | Garbacz v. Ford | Critical |
| Lincoln MKC / MKZ | 2015-2019 | 2.0L EcoBoost | Garbacz v. Ford | Critical |
| Ford Focus RS | 2016-2018 | 2.3L EcoBoost | Separate class actions; head-gasket recall (19S38) | Critical |
| Ford Bronco | 2021-2024 | 2.3L EcoBoost | Emerging class action; TSB pending | High |
| Ford Ranger | 2019-2024 | 2.3L EcoBoost | Owner complaints; TSB pending | High |
| Ford Mustang EcoBoost | 2015-2023 | 2.3L EcoBoost | Owner complaints; some goodwill | High |
| Ford Explorer (Limited / Sport / ST) | 2020-2024 | 2.3L EcoBoost | Owner complaints | High |
Data sourced from NHTSA recall database (nhtsa.gov/recalls), manufacturer technical service bulletins, and publicly filed class-action documents. Always verify with your VIN before purchase or repair.
Recalls are tied to specific VINs, not just model years. Run yours through these free tools before you buy, sell, or schedule a repair:
Use our free VIN decoder to pull build info, or run a free AI diagnosis if you already have symptoms.
Garbacz v. Ford Motor Co., No. 1:21-cv-02347 (N.D. Ill.) alleges uniform 1.5L / 2.0L EcoBoost coolant-intrusion defects. The Focus RS received a head-gasket service program (19S38). Bronco, Ranger, Mustang 2.3L claims are emerging in 2025-2026 and have not produced a nationwide settlement yet.
If your EcoBoost is losing coolant with no external leak, request a documented combustion-leak (block test) on every cylinder and a leak-down test. Get the dealer to reference any open Ford TSB or service program (19S38 for Focus RS) and preserve all ROs for class-action eligibility.
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Yes, if it occurs within 5 years / 60,000 miles. After that, Ford goodwill is case-by-case and depends on service history.
No. Continued operation can hydrolock the engine on a cold start, which usually means a long block replacement.
No. Cooling-system sealants do not fix a cracked head or block. They can mask symptoms briefly and delay diagnosis.
For 2.3L Focus RS head gaskets, yes (service program 19S38). For other EcoBoost vehicles, the issue is currently addressed by TSB and case-by-case goodwill rather than a formal NHTSA safety recall.
The 2.7L EcoBoost (F-150, Edge ST, Fusion Sport, Bronco) has separate complaints but is not the primary target of the coolant-intrusion class actions.
Document the failure and prior coolant-loss complaints, file a goodwill request with Ford, and consult a lemon-law attorney about state remedies.