Honda Civic Cng
Problems & Worst Years

A narrow slice of data covers the Civic CNG, limited to the 2015 model year: 144 total complaints across 26 problem types, three of which were rated as safety concerns. Transmission failure leads decisively at 36 occurrences, describing a car that can lose the ability to shift or move under power without warning. A separate transmission fluid cap issue added another 10 reports, suggesting the powertrain's fluid system was a recurring point of owner frustration beyond the failures themselves.

The second-largest complaint category is unrelated to the drivetrain: airbag malfunction, cited 20 times and rated as a safety concern, with a further 6 reports specifically describing airbag deployment failure — also safety-rated. Power loss during driving rounds out the top five at 6 occurrences, a smaller but related echo of the same transmission weakness driving the top complaint. No NHTSA recall campaigns are attached to this model year in the data, meaning these were owner-reported issues without a corresponding factory recall response on record.

With only one model year represented, there isn't a multi-year trend to draw on here, but the concentration of complaints in two unrelated systems — transmission and airbags — is notable on its own. A buyer looking at a 2015 Civic CNG should have a shop specifically check transmission behavior under load and confirm the airbag system's warning light and history, since those are the two areas where owners repeatedly ran into trouble. It's worth keeping in mind that these counts reflect what drivers chose to report to NHTSA rather than a precise measurement of how often the car actually fails, so a full service history and independent mechanical inspection matter more than the complaint tally by itself.