2018 Honda Accord · symptom sheet
Turbo failure or loss of boost
- 98owner reports
- 110,000median miles
- $4,000median quote
- 2involved a crash
Newest report Sep 1, 2026 · checked Sep 19, 2026
571 of the 1,867 complaints on this car are about the engine. 98 of those describe turbo problems.
Tick what matches of 98 reports
What got replaced
Owners who name the part that was replaced mention the turbocharger (98 reports) and the boost sensor (3 reports).
Recalls and investigations
No recall on the engine covers the 2018 model year as of Sep 19, 2026.
NHTSA investigations into the engine on the Accord
Honda high engine speed. Closed may 4, 1987.
NHTSA summary
None of these investigations covers the 2018 model year.
What owners paid
32 of the 98 reports quote a price. Each dot is one quote. The middle half runs $2,000 to $5,000.
When it happens
The middle half of failures fell between 81,000 and 137,000 miles, from the 36 reports that gave a mileage.
What owners wrote
“The head gasket failed on my 2018 Honda Accord 2.0T at 81,000 miles due to weak factory head bolts stretching under turbo boost, causing cooling system over-pressurization and risk of engine stalling/overheating”
Filed May 16, 2026 · 81,000 miles
“2018 Honda Accord with blown head gasket. Vehicle has a 1.5L turbo charged engine and 100,000 miles.”
Filed Apr 14, 2026 · 100,000 miles
“All dash lights are on and the Honda dealership told me I have a blown head gasket, need a turbo replacement & fuel pump in which I wasnât able to drive the car for 7 months at 112,276 miles..This seems like a known issue for this make and model vehicle after 100,000 miles”
Filed Mar 4, 2026 · 112,276 miles
“Honda Accord 1.5 TURBO, Head Gasket Blown for the second time in 2 years. The problem has been reproduce by dealer and independent service center. The car shakes when you turn on the car, first indication. Then all warning lights show up on dash board.Emission system Problem, Brake system, Vehicle instability, Adapative cruise control, road departue.”
Filed Aug 6, 2025
Should you keep driving it?
This page can't tell you that. 2 of 98 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation.
Other problems on this car
- Engine overheats or leaks coolant 342 reports
- Check engine light or misfire 277 reports
- Brakes grind, pulse or wear early 255 reports
- Engine stalls or loses power while driving 247 reports
- Brakes on its own (automatic emergency braking) 227 reports
- Engine failure, knocking or rod bearing 164 reports
- Fuel pump failure 153 reports
- Multiple warning lights come on at once 121 reports
- Infotainment, screen or backup camera fails 109 reports
- Adaptive cruise or lane keeping misbehaves 103 reports
- Forward collision warning goes off or the camera drops out 92 reports
- Airbag warning light or recall 58 reports
- A/C blows warm or the compressor fails 55 reports
- Battery dies or the car will not start 42 reports
- Loses power when accelerating 40 reports
- Seat belt or seat problems 35 reports
- Paint peels or body rusts 28 reports
- Traction control or StabiliTrak light comes on 26 reports