Should the Classic Focus use 92 or 95 octane gasoline?

[JessicaLynn]

The Classic Focus is recommended to use 92 octane gasoline. The standard for selecting gasoline grade is the compression ratio of the car engine. Generally, the higher the compression ratio of the engine, the smaller the volume of the combustible mixture being compressed, resulting in more power and lower fuel consumption. 92 octane gasoline has an octane rating of 92 and a heptane content of 8, making it suitable for mid-range cars. Taking the Focus 2021 Sedan 1.5L Manual Fengyue model as an example: it is a compact car launched by Changan Ford, with a length, width, and height of 4647mm, 1810mm, and 1468mm respectively, and a wheelbase of 2705mm. It is equipped with a 1.5L naturally aspirated engine, with a maximum power of 90kw and a maximum torque of 153nm, paired with a 6-speed manual transmission.

[Connor]

I've been driving a classic Focus for years and always use 92-octane gasoline, which works perfectly fine. The vehicle manual clearly states that the engine compression ratio is designed to match 92-octane, so there's no need to use 95-octane—it's just a waste of money. Higher-octane fuel has better anti-knock properties, but for this car, there's no noticeable difference in everyday driving. I've tried 95-octane a few times, and it didn't reduce fuel consumption or improve power—it just increased expenses. With gas prices rising sharply these days, sticking to 92-octane can save hundreds of dollars a year, enough for several extra fill-ups. Remember, the key is to go to reputable gas stations where fuel quality is reliable, ensuring smooth performance. Long-term use of 92-octane won't harm the engine—as long as maintenance is done properly, the car will remain durable.

[VonSamantha]

From a cost-saving perspective, choosing 92-octane fuel for the classic Focus is the wisest choice. 95-octane costs about 1 yuan more per liter. If you drive 2,000 km per month with a fuel consumption of 7L/100km, the price difference can save you dozens of yuan—small savings add up. This car's engine is optimized for 92-octane, so using 95-octane offers no extra benefits and just wastes resources. I drive daily in the city to shuttle my family, and 92-octane works perfectly with steady performance. If you want better fuel efficiency, maintaining smooth driving habits is more effective than switching fuel grades. When fuel prices fluctuate, sticking to 92-octane ensures economy—don’t fall for higher-octane hype. There’s no risk of knocking during daily commutes, so upgrading isn’t necessary.

[Nora]

The classic Focus engine is suitable for 92-octane gasoline, with a not-so-high compression ratio, making 92-octane a perfect match. Using 95-octane fuel can provide better anti-knock performance, but it doesn't offer any substantial improvement for this car and only costs more. Choosing the right one saves hassle.