Do new cars need fuel additives?

[VonElijah]

New cars do not need fuel additives. Although fuel additives have effects such as cleaning system carbon deposits, increasing octane number, improving atomization, reducing wear, and protecting the engine, for new cars, using regular fuel is more beneficial to help various parts, especially the engine, break in to the best condition. Therefore, the use of additives is not recommended. Fuel additives can be divided into gasoline additives and diesel additives based on their target usage. Both cleaning and maintenance types contain cleaning factors in their chemical compositions, which can effectively clean or inhibit the formation of engine carbon deposits. According to different chemical compositions, additives are divided into five generations in total.

[LilyFitz]

As someone who loves car maintenance, I've driven several new cars and feel that adding fuel additives is generally unnecessary. With a brand-new engine in pristine condition, the fuel system hasn't accumulated carbon deposits that clog injectors yet, and manufacturers have already optimized it well at the factory. You can save that money, since additives often cost dozens of yuan per can and offer negligible performance improvements for new cars. However, if you're concerned about long-term fuel quality or preventing future issues, occasionally adding a bottle of reliable cleaner can be beneficial—it helps fuel burn more completely, reduces emissions, and keeps the car running smoothly. The key is not to overuse them; just follow the manual's maintenance schedule for new cars, as excessive use may prove ineffective.

[Briella]

At my age, I've driven countless cars, from old clunkers to the latest models, and honestly, new cars don't need fuel additives at all. Back in the day, we used additives to clean severe carbon buildup in old engines, but modern engines are far more advanced with built-in cleaning agents in the fuel. Don't fall for sales pitches claiming new cars require additives—that's just throwing money away. I've rarely seen it mentioned in manuals; just drive as usual. Maintaining regular oil changes and air filter replacements matters far more. Carbon buildup accumulates very slowly in new cars—you're better off saving that additive money for tire inflation or gas.

[StGemma]

I believe new cars usually don't require fuel additives. I drive a new model myself, and the engine technology is much more advanced, capable of automatically reducing carbon deposits, making additional intervention unnecessary. Think about it, manufacturers' maintenance plans rarely include additive steps unless specifically recommended by certain brands. If you're pursuing high performance or environmental friendliness, you could opt for some low-carbon additives, but in my actual tests, the effects were minimal. New cars are already optimized, and you can drive them without issues for several years.

[LeEva]

As someone who values household economy, I don't think new cars need fuel additives. It's a waste of money—each can costs dozens of yuan, and the effects aren't guaranteed. If you accidentally buy inferior products, they might even damage the car. I suggest following the owner's manual for maintenance. If the manual doesn't mention additives, don't complicate things. New cars have fewer carbon deposit issues and run smoothly, so why invite trouble? If you want to prevent problems, it's more reliable to get a professional check at a 4S shop.

[OGrant]

I enjoy maintaining my car by myself, and even for a new car, I occasionally add fuel additives as a preventive measure. I choose a well-known brand product, pour a can into the tank when refueling, and then take a high-speed drive. It helps clean injector carbon deposits and extends the fuel system's lifespan. Although a new car's engine is clean, this regular treatment makes the car more durable and slightly reduces fuel consumption. I've tested several brands, and the effects are similar. The key is to follow the instructions and avoid overuse.