What grade of fuel does the Focus use?

[OMargaret]

For the Ford Focus, please use unleaded gasoline that meets the GB17930-2013 standard, specifically 93-octane (IV) or higher, or 92-octane (V) or higher. Here are some important notes: 1. Only use high-quality fuel without additives or other engine protectants. 2. Do not use fuel containing methanol. 3. Avoid running out of fuel, as it is harmful to the powertrain components. If the vehicle runs out of fuel, after refueling, you need to repeatedly turn the ignition switch on and off several times to allow fuel to be drawn from the tank into the engine. When restarting, the starting time will be a few seconds longer than usual. For keyless start vehicles, you can directly start the engine, but the starting time will also be longer than normal.

[StReagan]

I used to drive a Ford Focus, and most versions of this car, including the latest 1.5T engine, recommend using 92-octane gasoline, which is completely sufficient and cost-effective. The manual clearly states a minimum of 92-octane and warns against using 90-octane or lower, as it may cause engine knocking, reduced power, and affect acceleration performance. I usually opt for standard 92-octane fuel at reputable stations. While 95-octane has a higher octane rating, it’s unnecessary to spend extra for regular commuting. If you accidentally use the wrong fuel occasionally, don’t panic—driving for a while won’t cause major issues, but switch back to the correct type as soon as possible. Sticking to 92-octane can also improve fuel efficiency and make maintenance smoother.

[SanGrant]

As a car enthusiast, I've studied the engine design of the Focus. For regular 1.5L naturally aspirated engines, 92-octane gasoline is most suitable, while high-compression ratio engines like some sport editions from certain years require 95-octane. Octane rating affects ignition timing - using lower octane fuel causes knocking and reduces efficiency. However, regular 92-octane offers stable performance, saves money, and protects spark plugs. Modified cars may gain horsepower with 95-octane, but it's completely unnecessary for daily driving. Hybrid versions have similar fuel requirements - don't fall for marketing hype about unnecessary upgrades.

[OAbel]

From maintenance experience, I recommend Focus owners to use 92-octane gasoline as specified in the manual to avoid incorrect usage. Engine shaking or warning lights may indicate ignition issues caused by improper fuel grade; frequent use of 90-octane can accelerate component wear. Check fuel quality and spark plugs every six months, and maintain good driving habits to save both trouble and money.