The Lemon IndexThick white smoke that doesn’t clear after warm-up often means coolant is burning inside the engine.
Fix soon. Thin vapor on a cold start is normal. Thick, sweet-smelling smoke is not: get it checked before driving further.
A blown head gasket. Then: a cracked cylinder head or block; a leaking EGR cooler (common on diesels).
Owners describe this in 1,687 complaints to the U.S. government, most often on the Ford Escape.
Cars owners report it on most
Complaints describing this symptom, by model, all years. Raw counts, not a failure rate: popular models get more complaints.
Model years that report it most
| Model year | Complaints | Share |
|---|---|---|
| 2017 Ford Escape | 119 | 4% |
| 2018 Ford Escape | 78 | 4% |
| 2017 Ford Edge | 62 | 4% |
| 2016 Ford Fusion | 52 | 3% |
| 2017 Ford Fusion | 47 | 4% |
| 2018 Ford Edge | 44 | 5% |
| 2016 Ford Edge | 43 | 5% |
| 2019 Ford Edge | 40 | 5% |
| 2018 Ford Fusion | 30 | 6% |
| 2019 Ford Escape | 29 | 5% |
| 2015 Ford Fusion | 24 | 2% |
| 2014 Ford Escape | 21 | 1% |
Each row is that model year's record in NHTSA complaints, not the history of any one car. Share = complaints describing this symptom out of every complaint we hold for that model year (shown when the year has 50+ complaints).
Where it makes up the biggest share
2018 Ford Fusion · 6% 2018 Ford Edge · 5% 2019 Ford Edge · 5% 2019 Ford Escape · 5% 2016 Ford Edge · 5% 2017 Ford Edge · 4% 2017 Ford Escape · 4% 2018 Ford Escape · 4%
Model years with 150+ complaints in our data and 10+ describing this symptom, ranked by share. A high share means owners of that year who complained often mentioned it.
The details
Common causes of white smoke from exhaust
- A blown head gasket
- A cracked cylinder head or block
- A leaking EGR cooler (common on diesels)
- Condensation on cold mornings (thin, clears within minutes)
- A failing turbocharger seal
General causes, not a diagnosis. A shop should confirm the cause with tests before replacing parts.
Is it safe to drive with white smoke from the exhaust?
Fix soon. Thin vapor on a cold start is normal. Thick, sweet-smelling smoke is not: get it checked before driving further.
Get help right away if the temperature gauge climbs; coolant keeps dropping.
Of the 1,687 complaints describing it, 7% say the car was towed and 4% mention a fire.
What the complaints show
The parts owners filed these complaints under: engine (55%), engine and engine cooling (40%), power train (10%), fuel/propulsion system (5%). A complaint can list more than one.
Median odometer reading when owners reported it: 84,000 miles.
Most reports by make: Ford (952), Kia (86), Chevrolet (69), Hyundai (62), Toyota (61).
What owners say it cost to fix
Repair bills owners named in complaints that describe this symptom (cooling, engine, exhaust & emissions, fuel system repairs): the middle half ran $3,000 to $9,000, typical $6,100, from 98 bills.
Each figure is one repair bill as an owner wrote it in a complaint, not a quote for your car. Prices vary with the part, the shop and the year.
Engine codes that come up with it
P0303 P0302 P0301 P0300 P0316 P0304
Trouble codes owners named in these complaints more often than in other symptom complaints. Look up any code →
Related symptoms
Coolant leak Engine misfire Car shakes at idle Car shaking and check engine light on Engine overheating Smoke from under the hood
Quick answers
What causes white smoke from exhaust?
Thick white smoke that doesn’t clear after warm-up often means coolant is burning inside the engine. Common causes: a blown head gasket; a cracked cylinder head or block; a leaking EGR cooler (common on diesels); condensation on cold mornings (thin, clears within minutes); a failing turbocharger seal.
Is it safe to drive with white smoke from the exhaust?
Fix soon. Thin vapor on a cold start is normal. Thick, sweet-smelling smoke is not: get it checked before driving further.
Which cars have this problem most?
In complaints to NHTSA, owners describe it most on the Ford Escape, Ford Edge and Ford Fusion. These are raw counts, so popular models rank higher; complaints are owner reports, not proof of a defect.
How much does it cost to fix?
In 98 repair bills owners named in complaints describing it, the middle half ran $3,000 to $9,000. The right repair depends on the cause.
Counts: NHTSA owner complaints whose text describes this symptom (we matched owners' own wording, then read samples to check the matches). A complaint is an owner's report, not a diagnosis or proof of a defect. Causes and advice are general information in our own words, not repair advice for your car. Every symptom · Engine code lookup