There are 1 stored owner reports matching the engine leading-label group for the 2018 Nissan Frontier in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)I bought this truck from my boss man and had it put in the shop to replace the head gasket but they ended up changing the valve cover the intake manifold gasket and putting plugs in it due to a smoking issue and skipping but after all the repairs were done it turns out that the valves are bad in the engine and they more than likely they were bad when they installed originally. It's causing stalling issues in traffic and I'm sure I'm not the only one with this problem.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.