Skip to content
Hybrid propulsion systemPart report

2018 Honda Clarity Plug-In Hybrid Hybrid propulsion system Problems

Complaints
1about this part
Share
1%of 137 total for the year
Median mileage
120,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the hybrid propulsion system of the 2018 Honda Clarity Plug-In Hybrid, 1% of the 137 complaints for this model year. Where a mileage was given, the median is 120,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The contact owns a 2018 Honda Clarity Plugin Hybrid. The contact stated that after an extensive driving period, there was an abnormal sewage odor coming from the vehicle without warning. The contact was then alerted by a passenger in the vehicle that the odor was coming from the toxic gases coming from the battery. The manufacturer was notified of the issue. Upon investigation, the contact was concerned that an improper hybrid battery was installed in the vehicle. The vehicle was not repaired. The failure mileage was approximately 120,000. The VIN was not available.”

NHTSA complaint #11530208, filed 2023-07, 120,000 miles

Hybrid propulsion system: other model years

YearComplaintsShare of year
201811%

Other parts of the 2018 Honda Clarity Plug-In Hybrid

Fuel system
38 complaints
Engine
25 complaints
Electrical system
20 complaints
Other or unknown
20 complaints
Transmission and drivetrain
19 complaints
Forward collision avoidance
15 complaints
Vehicle speed control
12 complaints
Visibility (wipers, defrost, mirrors)
11 complaints
Brakes
10 complaints
Exterior lighting
10 complaints
Lane departure
10 complaints
Air bags
3 complaints

← All problems reported for the 2018 Honda Clarity Plug-In Hybrid

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology