What grades of fuel can the Focus use?
3 Answers
The Focus can use 92, 93, and 97 octane fuel. Precautions for refueling are: 1. Choose to refuel when the temperature is relatively low; 2. If the car is not used for a long time or used infrequently, keep a small amount of fuel; 3. Do not refuel when a tanker truck is unloading; 4. Turn off the engine when refueling a gasoline car. Taking the 2021 Focus as an example, it is a compact car with body dimensions of: length 4647mm, width 1810mm, height 1468mm, wheelbase 2705mm, fuel tank capacity 53l, and curb weight 1245kg. The 2021 Focus has a front MacPherson strut independent suspension and a rear torsion beam non-independent suspension. It is equipped with a 1.5L naturally aspirated engine with a maximum horsepower of 122ps, maximum power of 90kw, maximum torque of 153nm, and is paired with a 6-speed manual transmission.
My Focus has been running for almost ten years, and I've always used regular 87-octane gasoline with great results. The car's design doesn't require higher-octane fuel unless you have the turbocharged version, which might need 91-octane. Using lower-octane gas saves money, especially with current fuel price hikes. When refueling, pay attention to the station's labels—unleaded gasoline is sufficient. I've tried fuel from different regions; some small shops sell lower-purity gas that can cause engine knocking or increased fuel consumption, so I recommend sticking to major brand gas stations. Regular maintenance is crucial too—using the wrong octane can trigger sensor warnings, leading to costly repairs. After all these years, I find the Focus quite durable. Choosing the right fuel extends engine life and avoids unnecessary expenses. In summary, 87-octane is the mainstream recommendation, and occasionally using higher octane is fine, but there's no need to waste money.
As a car enthusiast, my Focus is the 2018 model, with engine designs allowing for 87 to 91 octane gasoline, depending on the specific variant. High-performance versions like the ST model recommend using 93 octane or higher to enhance explosive power. However, from my testing, higher-octane fuel offers slightly better performance with no significant difference in fuel consumption, while lower-octane fuel is more economical and practical. The fuel system automatically adjusts ignition timing via the ECU to adapt to different octane levels, but excessively low-octane fuel may cause knocking, damaging the pistons. Seasonal factors should also be considered when choosing fuel—lower-octane fuel provides more stable starts in winter, while higher-octane fuel offers better thermal efficiency in summer. Additionally, some regions offer ethanol-blended fuels like E10, which the Focus is compatible with, though higher concentrations may accelerate fuel pump aging. I maintain my engine regularly, using high-quality filters to reduce impurities and ensure smooth fuel flow. Simply put, 87 octane is sufficient for daily use, while higher octane is for those seeking more excitement.
