
First, it is necessary to change the driving style of the motor vehicle. Clean and inspect the vehicle's fuel system. Replace the vehicle's spark plugs and clean the engine carbon deposits. Replace the vehicle's air filter.

I've been driving this 2007 Focus for a while, and the sudden spike in fuel consumption really puzzled me. After careful consideration, I think it's probably due to driving habits, like frequent hard acceleration or braking which burns more fuel. I've been trying to drive more steadily lately, maintaining a constant speed on city roads and keeping within reasonable speed limits on highways. I also checked the tire pressure and topped it up to the recommended values in the manual, as low pressure increases rolling resistance. I replaced the air filter myself—it only took ten minutes—since a dirty one affects air intake efficiency. Regular maintenance shouldn't be skipped either, like oil and filter changes, or cleaning the throttle body. These are low-cost but can significantly reduce fuel consumption. Paying attention to these small things has helped me cut fuel consumption by 15%, saving money and making driving safer.

As a long-time owner, I believe the high fuel consumption of the 2007 Focus is mainly caused by aging components. For example, worn-out spark plugs lead to poor ignition and incomplete combustion, which inevitably increases fuel usage. I've disassembled and inspected mine—after replacing a set, the engine runs much smoother. Low tire pressure is also a hidden culprit, so I remind owners to regularly check with a handheld tire pressure gauge and maintain it within the manual's specified range. Another issue is the oxygen sensor; if faulty, it can send incorrect data causing excessive fuel injection—I recommend reading OBD codes for diagnosis. Driving-wise, I've adopted warming up the engine for a few minutes before setting off, maintaining steady speeds, and minimizing coasting in neutral. These adjustments have steadily reduced fuel consumption and improved driving comfort.

My car consumes a lot of fuel in city driving, so fuel-saving tips start with daily details. First, check the tire pressure monthly with a gauge and inflate to the standard value if low to avoid extra fuel consumption. Replace the air filter if it's clogged—buying online is cheap and DIY saves hassle and money. Drive smoothly, plan routes ahead to avoid peak hours, and combine short trips into longer ones. Use the AC less and ventilate with the sunroof in hot weather. Now, my Focus has much better fuel efficiency, and the savings add up for small upgrades.


