Is it necessary to add fuel additive when refueling a new car?

[RobertDella]

It is not necessary to use fuel additive when refueling a new car. Here is some relevant information about fuel additives: 1. Effects of fuel additives: Fuel additive is a common name for fuel system cleaners. To some extent, it can clean the fuel injectors and fuel system, improve the atomization effect of the fuel injectors, promote better mixing and combustion of air and gasoline, and use antioxidant detergents to remove gum and moisture from the fuel system, thereby achieving the effect of cleaning carbon deposits. 2. Testing of fuel additives: After adding fuel additive to vehicles, the tested vehicles showed no significant changes in power, and the same was true for instantaneous fuel consumption. The cleaning effect was also minimal. If you expect fuel additives to improve engine power or directly reduce fuel consumption, you may be disappointed.

[DeJuliette]

I remember when I bought my new car, the salesperson always recommended adding fuel additives during refueling, claiming it could improve performance and prevent carbon buildup. But when I carefully read the manual, the manufacturer clearly stated that a new engine just after break-in has clean fuel systems and doesn't need unnecessary additives. I tried it once or twice myself—saw no improvement in fuel economy or power, just wasted dozens of yuan per bottle. Now, after two years of driving, maintaining regular 5,000-km oil changes with quality oil, the engine runs as smoothly as when new. Rather than spending on those bottled solutions, better habits are: choose premium fuel brands, avoid substandard gas from small stations; regularly maintain and inspect air filters and fuel systems. This approach saves money and ensures long-term reliability—definitely makes additives unnecessary during the new car phase.

[DiBrantley]

From a technical perspective, I'm the type who deals with cars. New car engines are optimized for fuel injection and control systems right out of the factory, ensuring efficient combustion and preventing impurities. Fuel additives claim to clean the fuel system, but new cars basically have zero carbon buildup. Using them might interfere with sensors or dilute oil concentration instead. My research shows most experts recommend avoiding additives for the first 20,000 kilometers in a new car. If you really want to use them, wait until higher mileage or if you frequently drive in dusty areas. Normally, I focus more on fuel quality—using 95 octane or higher gasoline is much more reliable than depending on additives. Additionally, during maintenance, technicians will assess whether professional cleaning services are needed, which is more dependable than self-administered additives. The core of early-stage maintenance for a new car is sticking to factory settings—don’t waste money disrupting the balance.

[McAlyssa]

Having driven new cars for decades, my consistent practice has been to add nothing. Fuel additives, fancy as they sound, offer little actual benefit to new vehicles. The engine is fresh out of the factory with perfect tuning—adding anything is just wasted effort. Older cars might have needed carbon deposit cleaning, but modern technology has strong self-cleaning capabilities. My lesson? Save the additive money and invest it in proper first maintenance at authorized 4S shops with quality filters. Don't fall for marketing hype—simplicity is best. Use standard fuel grades and stick to regular minor maintenance, and your new car will naturally last longer.

[McClaire]

Let's do the math economically. As a practical person, I consider fuel additives costing around 30-50 yuan per bottle. Adding them over ten times a year amounts to several hundred yuan in expenses. For new car engines without accumulated issues, using them is purely wasteful. Claims about fuel savings or performance boosts are often exaggerated. In the first year of a new car, fuel costs are already substantial—why add this unnecessary expenditure? It's better to invest in higher-octane gasoline, which can optimize combustion efficiency. When the car reaches 30,000 kilometers and shows slight hesitation, then consider using additives to clean carbon deposits. But initially, prioritize spending on quality engine oil and filters to ensure engine health—that's the cost-effective choice.

[DeColin]

I prioritize long-term maintenance and environmental protection, so I decisively skipped fuel additives when buying a new car. These additives contain chemicals that may increase exhaust pollution or affect engine lifespan. New car engines are designed to be environmentally friendly and efficient, requiring no additional intervention. Regular checks of the fuel filter and using high-quality engine oil are more reliable, avoiding unnecessary waste. If you're concerned about the fuel system, seek professional maintenance instead of using bottled solutions. Stick to simple maintenance, and your new car will enjoy a long life.