Can the new Jetta use 92 gasoline?
2 Answers
The new Jetta can use 92 gasoline. Definition of gasoline grades: 92 gasoline contains 92% isooctane, with the remainder being n-heptane. Similarly, 95 gasoline contains 95% isooctane. There is no difference in quality between these two types of gasoline; they are simply suited for engines with different compression ratios. Anti-knock properties of gasoline grades: Isooctane is related to anti-knock properties, while n-heptane affects the combustion speed. 92 gasoline has relatively weaker anti-knock properties, whereas 95 gasoline has higher anti-knock properties and a slower combustion speed. Choosing between 95 and 92 gasoline: 95 gasoline is suitable for high-end cars, while 92 gasoline is suitable for mid-range cars.
I've been driving the new Jetta for several years, and it's perfectly fine to use 92 octane gasoline, but you need to be cautious. The lower octane rating of 92 may cause slight knocking in the Jetta's engine, and over time, it increases the risk of carbon buildup and higher fuel consumption. I only use 92 when 95 isn't available at gas stations in remote areas—it's manageable for short city drives, but the power noticeably drops on highways. The manual recommends 95 octane, so sticking to the suggested grade helps prolong the car's lifespan. Saving money is one thing, but don’t risk engine damage for small savings—regular maintenance costs far more than fuel. Also, choose reputable gas stations for purer fuel quality to avoid issues from low-grade gasoline.
