Is it normal to have a speed of 120 km/h with an engine speed of 3500 rpm?

1 Answers
KaiLee
07/29/25 10:41pm
A speed of 120 km/h with an engine speed of 3500 rpm is not normal; this rpm is relatively high. Generally, most cars maintain an engine speed of around 2000 rpm at 120 km/h. When driving at high speeds, the transmission is usually in a high gear, which helps reduce engine speed and save fuel. Engine speed constantly reflects the working condition of the engine. If the speed is too low, fuel combustion in the cylinders may be incomplete, leading to carbon buildup in the engine, which can cause significant damage over time. Conversely, if the speed is too high, it can result in greater engine wear. Engine speed refers to the number of revolutions an object makes around a circular path per unit of time (different from frequency), with common types including rated speed and maximum speed.
Was this review help?
3
1
Share
More Forum Discussions

What is the range of Li Auto vehicles?

In pure electric mode, the Li ONE can achieve a range of up to 180 kilometers. Below is relevant information about Li Auto: 1. Introduction: Li Auto is a premium smart electric vehicle brand with the mission of creating a mobile home and a happy home. The company was founded in July 2015, headquartered in Beijing, and has its own manufacturing base located in Changzhou, Jiangsu. The founder of Li Auto, Li Xiang, is a renowned Chinese serial entrepreneur who previously established Autohome, the world's most visited automotive website. 2. Manufacturing Base: Li Auto possesses its own production qualifications and has built its own factory in Changzhou, Jiangsu. The Li Auto Changzhou base is designed with an annual production capacity of 100,000 vehicles, covering four major workshops: stamping, welding, painting, and assembly. It employs numerous advanced technologies and equipment to ensure that the manufacturing quality of the Li ONE meets luxury brand standards.
10
1
Share

Is It Necessary to Clean Sludge in a New Car?

Sludge cleaning in a new car is necessary because engine sludge may block the oil passages of the engine or even clog the oil pump, leading to severe consequences. Effects of Sludge: Sludge is a dark brown or black viscous substance formed during engine operation. It adheres to critical internal parts of the engine, hindering normal lubrication. Types of Sludge: Sludge can be categorized into high-temperature sludge and low-temperature sludge. The primary cause of high-temperature sludge is inferior engine oil, which polymerizes into larger molecules during high-temperature operation, thickening the oil and eventually forming sludge. Low-temperature sludge formation depends on fuel. During low-temperature or short-distance operation, moisture and fuel in the crankcase may not fully evaporate, leading to emulsification in the engine and sludge formation.
20
2
Share

Is It Safe If No Traffic Violation Is Found in Four Days?

Traffic violations require review and data entry, so not finding any violations in three days does not necessarily mean you're in the clear. You should wait at least thirteen working days, or fifteen days in total, without finding any violations to be sure. If a driver suspects their violation has been captured, they can check for any violation records using the violation query tool provided above. Regarding the timing of notification messages, there are two scenarios to consider: out-of-town violations and local violations. According to traffic laws, after a motor vehicle commits a violation, it usually takes 3 to 7 days to find the record online or receive a notification message. The latest should not exceed thirteen working days. If a driver does not receive any violation message within this 13-day period, it means there was no violation.
20
3
Share

Do I need to replace both front and rear tires when switching to a different brand?

When switching to tires of a different brand, you don't need to replace both front and rear tires, but you must replace both left and right tires simultaneously. Effects of not replacing in pairs: If the tires are significantly worn and you replace only one new tire instead of in pairs, it may cause issues such as vehicle pulling during driving or braking, especially noticeable on wet surfaces. This occurs because new and old tires have different grip levels, friction coefficients, and heights, leading to the aforementioned problems. Differences in tire drainage capacity can also cause hydroplaning or pulling during rainy seasons when driving through water. Tires of different brands: Tires from different brands can be mixed, but the two tires on the same axle must be identical. This means both front tires should be the same (no mixing) and both rear tires should be the same (no mixing).
2
4
Share

What are the reasons why the Nissan Tiida cannot start?

The reasons and solutions for the Nissan Tiida failing to start are as follows: Use of inferior engine oil: During cold starts, factors such as cylinder pressure, engine speed, and temperature make it difficult for inferior oil to ignite, preventing the engine from starting. It is recommended to use the oil recommended by the manufacturer or a higher-quality fully synthetic oil. Battery depletion: When the voltage during startup is lower than the minimum operating voltage of the computer, the engine control unit does not function, preventing the engine from starting. In this case, the battery should be recharged or replaced. Starter relay sticking: During startup, there is only a slight "click" sound with no further response, which is caused by the starter relay sticking. In this situation, simply pressing the end of the solenoid to force it forward can connect the starter circuit, allowing the engine to start.
4
1
Share

What is the Sheng Lu brand car?

Sheng Lu is a motorhome brand manufactured by Chongqing Jinguan Automobile Manufacturing Co., Ltd. Company Profile: The company is a large-scale and strong motorhome manufacturer in China, authorized by Mercedes-Benz and Volkswagen of Germany for modification. It possesses professional motorhome assembly production lines, large panel production lines, and woodworking processing centers. Its products cover four major series: business motorhomes, commercial travel motorhomes, self-propelled motorhomes, and trailer-type motorhomes. Company Models: The company has successfully developed and produced the "Sheng Lu" series of armored cash transport vehicles, communication vehicles, logistics support vehicles, on-site disposal vehicles, reconnaissance vehicles, medical vehicles, equipment vehicles, and dozens of other types of special-purpose vehicles. It also researches and produces various safety protection products such as bulletproof vests, bulletproof helmets, and bulletproof shields.
19
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.