Reasons why old cars consume a lot of gas unusually

Cars that have been on the road for many years often experience this phenomenon, and below are the secrets behind the question: Why do old cars consume a lot of gas?

Engine wear and fuel injector deposits

Engine parts undergo natural wear and tear with long term use.

Fuel injectors accumulate deposits, reducing combustion efficiency.

Fuel injector

Dirty or clogged oxygen sensor and air filter

Oxygen sensors and air filters, if not cleaned regularly, reduce fuel efficiency by up to 20%.

Check and replace on time to ensure the air and fuel mixture is in the correct ratio.

Oxygen sensor

Lubricants/solutions are not replaced periodically.

Lubricants help maintain moving parts, but if not replaced on time, can degrade performance.

Especially important after about 5 years of use, it is recommended to check and replace engine oil, transmission, power steering, brakes.

Old spark plugs and reduced spark performance

Worn spark plugs reduce sparking ability, resulting in inefficient fuel consumption.

Replace all spark plugs instead of single ones to ensure consistent performance.

Tire aging and its impact on fuel consumption

Tires have a limited lifespan, even when parked and driven less, they age, increasing the risk of tire explosion and fuel consumption.

Car owners need to replace tires on time and maintain tire pressure to reduce fuel consumption.

Aging tires are also the cause of car fuel consumption.

Driving habits

Driving habits such as excessive idling and frequent use of air conditioning all increase fuel consumption.

Careless driving such as sudden braking or sudden acceleration and deceleration also causes inefficient fuel consumption.

How to fix and maintain periodically

Regularly clean parts such as spark plugs, air filters, and check tire pressure.

Replace oil and lubricants/solutions on time.

Check and maintain important components, such as the exhaust system and fuel lines.

Replace tires on time and maintain tire pressure.

Note that in addition to vehicle longevity issues, maintenance habits play an important role in reducing fuel consumption. Vehicle owners should perform regular maintenance and use genuine spare parts to ensure vehicle safety and performance.

Source: https://www.congluan.vn/nhung-nguyen-nhan-khien-xe-o-to-cu-tieu-hao-nhieu-xang-bat-thuong-post275367.html