The National Highway Traffic Safety Administration’s Office of Defects Investigation has opened a defect petition review covering roughly 500,000 Ford Edge SUVs after owners reported coolant leaking directly into the engine’s combustion chambers. The petition, filed with the agency’s Office of Defects Investigation and numbered DP26008, covers 2015-2018 Ford Edge models built with Ford’s 2.0-liter EcoBoost turbocharged four-cylinder engine. Ford has not issued a recall, and NHTSA has not yet decided whether to grant the petition and escalate the review to an engineering analysis.
The complaint describes a mechanical failure, not a simple leak: coolant crosses from the cooling jacket into the cylinders themselves, fouling combustion instead of regulating temperature.
Coolant crossing into the combustion chamber
According to Ford Authority, the defect traces to the engine block and cylinder head design, combined with a head gasket seal the petition calls inadequate, that lets coolant seep into the combustion chambers under normal operating pressure. The outlet describes the engine’s open-deck cooling layout as prone to premature gasket failure and, in some cases, cracks forming between cylinders once the block flexes under heat cycles.
The Truth About Cars describes the resulting symptoms as a sudden, significant loss of power paired with an “Engine Coolant Over Temperature” warning on the dashboard, often followed by rough running once the engine cools and a check-engine light tied to a cylinder misfire. Those symptoms can appear well before a driver notices any visible coolant loss, since the fluid is being consumed inside the engine rather than dripping onto the ground.
A petition built on more than 1,500 complaints
autoevolution reports the petition cites 1,563 complaint incidents and pins the population at approximately 499,603 Ford Edge SUVs from the 2015-2018 model years, should NHTSA eventually order a recall. That number is what the agency’s Office of Defects Investigation is now weighing against Ford’s own data as it decides whether the complaint volume justifies opening a full engineering analysis, the step that precedes any recall decision.
Individual complaints filed with NHTSA add texture to the aggregate numbers. CarComplaints.com quotes one owner’s account of the failure: “Engine light came on…white smoke pouring out of exhaust…Dealer said engine needs to be replaced. $8300.00 quote.” A second complaint in the same report cites a dealer estimate of $8,447.54 for a long block replacement, and the site says Ford’s customer service denied financial assistance to at least one owner who sought help covering the repair. Both figures land close to what a used Ford Edge from those model years is worth on its own, which is the practical math driving owners to file complaints with NHTSA rather than simply paying a dealer out of pocket.
Those repair costs are the practical reason the petition has drawn attention beyond typical warranty disputes: an engine replacement quoted near $8,300 is a significant expense for a vehicle old enough, in many cases, to have already exited Ford’s original powertrain warranty. Owners describing white smoke and misfires in the same complaint are, in effect, describing an engine that failed outright rather than one that needed a minor repair.
What happens next in NHTSA’s review
The Office of Defects Investigation can grant the petition and open an engineering analysis, deny it outright, or ask Ford for additional data before deciding either way — and none of those outcomes carries a fixed public deadline. A separate Ford Authority report on the automaker’s broader safety posture notes that the Edge petition surfaced alongside unrelated NHTSA scrutiny of Ford’s 1.0-liter EcoBoost engines and a Maverick Hybrid braking complaint, at a moment when Ford has also brought on a former NHTSA official, David Hines, as its new chief auto safety officer.
None of those other inquiries changes the substance of the Edge petition, but together they describe a company facing federal scrutiny on several fronts at once rather than a single isolated complaint. The EcoBoost coolant issue is the only one of the three tied to a specific vehicle count and a numbered petition NHTSA has agreed to formally log and review.
Until the Office of Defects Investigation rules on the petition, owners of the roughly 500,000 affected Ford Edge SUVs have no recall notice to act on and no confirmed timeline for one. Ford has not published its own count of coolant-intrusion warranty claims to compare against the 1,563 complaints cited in the petition, and nothing in the public record yet shows how the automaker plans to respond if the agency does move forward. The open question is whether NHTSA finds enough of a pattern across those complaints to move the coolant-intrusion problem from a monitored petition to a formal engineering analysis — the step that, in past cases involving other automakers, has been the last stop before a recall is ordered rather than merely proposed.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
More from Morning Overview
- A handful of car engines are so tough mechanics say they almost never wear out
- The NSA is again telling phone owners to switch off one location setting
- Supplements now rank as the fifth-leading cause of death from liver disease.
- Herbal supplements are landing Americans in the hospital with liver damage, doctors warn
