Which engine sizes show up most in complaints about this part?

Among 2,198 owner complaints about this part where the VIN identifies the vehicle, 42% involve engines of under 1.6 L, against 11% of complaints about all the parts we track.

Engine size of the vehicles in complaints about this part, against all tracked parts

What it shows: under 1.6 L is the largest at 42%, followed by 1.6 to 2.0 L at 26%; the smallest shown is over 5.0 L at 1%.

Source: NHTSA owner complaint files with VINs decoded by NHTSA vPIC · data from 2025

Data and chart by CalcScrape: Head Gasket Repair Cost Calculator