Even after a full diagnostic check and major repairs, high fuel consumption can still be an issue.
When buying a used car, it’s easy to realize that the expenses don’t stop at the purchase price. While there are rare vehicles that require little to no part replacements, most used cars need some additional investment to fix underlying issues.
Sometimes, even after a thorough diagnostic and extensive repairs, drivers notice that fuel consumption remains high. On some online forums, enthusiasts suggest that replacing just one part could eliminate excessive fuel usage altogether.
Many car owners rush to service centers, only to see mechanics recommending costly replacements of parts that are actually working fine.
Common service suggestions include:
Often, these measures improve performance and bring fuel consumption back to normal. Yet, in some cases, the problem persists.
Experienced mechanics recommend skipping the minor fixes and replacing the fuel pump right away. This approach makes sense, especially for higher-mileage cars. In most cases, this single replacement brings fuel consumption down to an acceptable level.
In other words, sometimes one part is all it takes to forget about excessive fuel use.