
The T-Roc uses 95-octane gasoline. Gasoline is a volatile, flammable hydrocarbon mixture liquid obtained from petroleum through distillation or cracking processes, and it is used as fuel. It appears as a transparent liquid, primarily composed of aliphatic hydrocarbons, naphthenic hydrocarbons, and a certain amount of aromatic hydrocarbons. The characteristics of gasoline include: 1. Volatility; 2. Stability; 3. Anti-knock properties; 4. Corrosiveness; 5. Cleanliness. Taking the 2021 T-Roc as an example, it belongs to the compact SUV category with the following dimensions: length 4318mm, width 1819mm, height 1582mm, wheelbase 2680mm, front track 1542mm, rear track 1543mm, fuel tank capacity 51 liters, and trunk capacity 401 liters.

As a veteran driver who has been driving the T-Roc for two years, my experience is that using 95-octane gasoline is the most suitable. The salesperson specifically emphasized this when I picked up the car, and there’s a 95 label on the fuel tank cap. I mainly use the car for long-distance trips, and after trying 92-octane fuel a few times, I noticed the engine noise increased significantly, and the power felt sluggish when climbing hills. Later, I consistently used 95-octane, and the throttle response became noticeably smoother, with fuel consumption stabilizing at around 7.2 liters. However, it’s important not to skimp by going to small gas stations—last time I filled up with low-quality fuel on a county road, the engine warning light came on immediately, and cleaning the fuel system cost me over 800 yuan. I recommend adding fuel system cleaner once a month; it’s very effective in preventing carbon buildup.

Friends who have researched gasoline grades know that 92 and 95 represent the octane rating. German turbocharged engines like the T-Roc have high compression ratios and fast piston movement, making them prone to knocking with lower-grade fuel. Knocking sounds like metal clanging and can damage piston rings and cylinder walls. 95-octane fuel has better anti-knock properties and, combined with direct injection technology, ensures thorough fuel atomization. From my experience, long-term use of 95-octane results in significantly less carbon buildup in the combustion chamber, and my spark plugs haven’t needed replacement even after 40,000 kilometers. Although it costs a few cents more per liter, it’s worth it to avoid the risk of major engine overhauls.

I often find that 95-octane gasoline provides longer range on highways. When filling up the tank to the same level, 95-octane allows me to drive about 50 kilometers more than 92-octane. This is likely related to its calorific value, as 95-octane burns more efficiently. When calculated, the cost per kilometer is roughly the same. If you frequently encounter traffic jams, it's advisable to use 95-octane along with the auto start-stop feature, which significantly reduces carbon buildup. However, in hot and humid southern regions, avoid using fuel with too high an octane rating, as 98-octane may lead to incomplete combustion. Recently, fuel prices have risen, but I still adhere to the half-tank principle, as running too low on fuel can affect the fuel pump's cooling.


