Why does the Mistra's fuel tank not actually hold 62 liters?

[DelJonathan]

Mistra's car manual states that the total fuel tank capacity is 62 liters, which refers to the total volume of the fuel tank. The fuel pump and other accessories inside the tank occupy part of the volume, and there is also residual fuel in the tank, so the actual amount of fuel that can be added is less than 62 liters. Here is some related information about the Mistra: 1. Introduction to the Mistra: The Mistra (MISTRA) is a flagship product of Beijing Hyundai's localization strategy, officially launched in 2013. Positioned between the Sonata and the Elantra, it is a pioneer in the B- segment of the Chinese car market and a successful example of Beijing Hyundai's "dislocation competition" product strategy. 2. Market positioning: The new-generation Mistra is positioned as a mid-to-high-end sedan, featuring leading space and intelligent technology configurations in its class. It provides users with a more efficient travel experience and a more enjoyable driving experience, realizing users' ideal new way of intelligent living.

[Eloise]

I have always studied automotive systems and understand the issue of fuel tank capacity labeling. The Mistra claims a 62-liter fuel tank, but this is usually the nominal total capacity, which includes a safety reserve space. In actual use, only about 55 to 58 liters can be filled. This is because fuel expands with temperature changes—volume increases in hot weather and decreases in cold winters. Without reserved space, the tank could experience excessive pressure or even rupture. Engineers have designed dead zones and expansion buffers in the tank, reserving about 10% of the capacity to prevent such issues. The fuel pump stops early during refueling to avoid overfilling. This is not a quality issue but an international standard practice to ensure driving safety. There’s no need to obsess over those few liters of difference—focusing on the actual guidelines in the manual is more important. During normal driving, the fuel gauge also has a protective mechanism; when it prompts you to refuel, there is still some fuel left. Just develop good habits and let it stop automatically. Remember, safety comes first—don’t force a full tank and create risks.

[StSebastian]

Having driven the Mistra for five years, experience has taught me that while the fuel tank is labeled as 62 liters, it always falls a few liters short when filled to the brim. Initially, I suspected the gas station was cheating me, but after consulting a mechanic friend, I learned that all car fuel tanks are designed this way—there must be buffer space to accommodate fuel expansion and contraction. In summer, fuel expands significantly due to heat, while in winter, it contracts when cold. The reserved space ensures the tank won’t burst or leak. When refueling, I let the pump stop automatically, and even if I try to squeeze in more, it never reaches 62 liters. In actual driving, fuel consumption isn’t linear; when the gauge shows low, there’s still a reserve left as a safety margin. Now, I don’t obsess over the numbers and accept this as a normal variance. Instead, I focus more on fuel management and regular checks while driving to avoid potential safety hazards.

[LeviMarie]

As an automotive enthusiast, I've compared the fuel tank capacity issue with the Mistra. The manufacturer's stated 62 liters is based on the total capacity tested in the lab, but the actual usable amount is less than 60 liters, mainly due to safety reserve space and design flaws in the fueling system. For example, there are dead corners at the bottom of the tank where the fuel pump can't completely extract the fuel; temperature also has a significant impact, with fuel expanding by 15% at high temperatures, necessitating a buffer. Similar situations occur with Honda and Toyota vehicles, where the stated capacity is higher than the actual. I believe this is a reasonable industry practice to reduce fuel evaporation pollution and explosion risks. When refueling, users shouldn't force a full tank; understanding the design intent is sufficient, as the capacity difference doesn't affect vehicle performance.