Toyota Yaris Cracked Fuel Cap – Impact on Fuel Efficiency?

Home > Gari Forums > Toyota Forums > Toyota Yaris Forums > Toyota Yaris Cracked o r Loose Fuel Cap Forums

Toyota Yaris Cracked Fuel Cap – Impact on Fuel Efficiency?

Hi there,

I’ve noticed that the fuel cap on my Toyota Yaris has a small crack, and I’m wondering if this could be affecting my fuel efficiency o r causing other issues like fuel smell around the car.

For those who’ve dealt with a cracked fuel cap, did it have any noticeable impact on your car’s performance o r fuel economy? Is it worth replacing immediately, o r can it wait?

Appreciate your insights!

Qalb E Momin asked on 28 Jan 2025 15:14:19 pm

1 Answer

23 views |

Car Mechanic Expert - on 28 Jan 2025 15:18:11 pm

A cracked fuel cap can indeed cause issues with your Toyota Yaris. It may lead to fuel vapors escaping, which can result in a noticeable fuel smell around the car, reduced fuel efficiency, o r even trigger the check engine light due to an emissions system leak.

Here’s what you can do:

Impact on Performance: While a cracked fuel cap usually doesn’t directly affect engine performance, it can lead to minor fuel loss and issues with the emissions system, which might indirectly impact fuel economy.

Replace Immediately: It’s best to replace the cracked fuel cap as soon as possible. A replacement is inexpensive and simple to install, and it will ensure proper sealing of the fuel system.

Prevent Further Issues: Replacing the cap promptly helps avoid triggering the check engine light o r creating long-term emissions system problems.

Using an OEM replacement fuel cap is recommended for the best fit and durability. Fixing it now will save you potential trouble later.