How is the climbing ability of electric vehicles?

What is the real fuel consumption of the 2021 Volvo XC60?

The 2021 Volvo XC60 has six models. Among them, five models—the 2021 T5 AWD Inscription Luxury, AWD Momentum Luxury, AWD Momentum Sport, AWD Essential Luxury, and AWD Essential Sport—are equipped with a 250-horsepower engine, with an NEDC fuel consumption of 7.9L per 100km. The 2021 T4 Essential Luxury model, equipped with a 190-horsepower engine, has an NEDC fuel consumption of 7.5L per 100km. The fuel tank capacity of different 2021 XC60 models is the same. The distance that can be covered with a full tank of fuel is as follows: For models equipped with a 250-horsepower engine and an NEDC fuel consumption of 7.9L per 100km, the fuel tank capacity is 70L, and the distance that can be covered with a full tank is 70/7.9*100=886km. For models equipped with a 190-horsepower engine and an NEDC fuel consumption of 7.5L per 100km, the fuel tank capacity is 70L, and the distance that can be covered with a full tank is 70/7.5*100=933km. The fuel consumption of a car is directly related to five major factors: driving habits, the car itself, road conditions, natural wind, and ambient temperature. Specific factors that can increase fuel consumption are as follows: Driving habits: Aggressive driving, such as sudden acceleration, frequent overtaking, and not easing off the throttle before a red light, can increase fuel consumption. The car itself: Cars with larger displacement generally consume more fuel than those with smaller displacement because larger displacement usually means higher power, requiring more gasoline to burn and perform work. Heavier cars also consume more fuel because greater weight requires more driving torque. Road conditions: Driving on unpaved roads, muddy roads, soft surfaces, or mountainous roads increases resistance and fuel consumption. Natural wind: Driving against the wind or on windy days increases the car's resistance and fuel consumption. Low ambient temperature: When the engine block is cold, the injected gasoline does not vaporize easily during cold starts, requiring more gasoline to burn, which increases fuel consumption. Additionally, in low temperatures, the engine's computer may control the engine to run at higher RPMs to warm up, which also increases fuel consumption.

7

1

Share

Is a tire pressure of 192 kPa indicating a puncture?

A tire pressure of 192 kPa suggests a puncture, and the tire pressure needs to be replenished. Under normal circumstances, a car's tire pressure should be between 2.3 and 2.5 bar (230-250 kPa). When the tire pressure is 192 kPa, it is noticeably lower than the recommended range. This could be due to a puncture causing air leakage, which naturally results in lower tire pressure. If the low tire pressure is caused by a puncture, the tire should be repaired or replaced as necessary, and the tire pressure should then be adjusted to the standard level. Hazards of low tire pressure: Increased friction with the road surface, leading to higher fuel consumption; Heavier steering wheel and a tendency for the vehicle to drift, compromising driving safety; Excessive movement of tire components, causing abnormal heat due to over-compression; Reduced functionality of the tire's cords and rubber, leading to delamination or cord breakage, as well as excessive friction between the tire and rim, resulting in damage and abnormal wear at the bead area; Exponentially increased friction between the tire and the ground, causing a sharp rise in tire temperature, softening of the tire, and a drastic reduction in strength. High-speed driving under such conditions may lead to a blowout; Increased deformation of the tire body, making the sidewalls prone to cracking, along with flexing movements that generate excessive heat, accelerating rubber aging, fatigue in the cord layers, and cord breakage. It also increases the tire's contact area with the ground, accelerating wear at the tire shoulders.

6

2

Share

What Causes the Jerking Sensation When Braking in an Automatic Transmission Car?

Automatic transmission cars experiencing a jerking sensation when braking is often caused by sludge circulating within the transmission fluid, which can clog the oil passages in the valve body. Tips for transmission maintenance: Regularly check the automatic transmission fluid level—unlike engine oil, which is checked when the engine is cold, automatic transmission fluid should be warmed to approximately 50 degrees Celsius. Then, shift the gear lever through each position for 2 seconds before placing it in park. At this point, the dipstick's normal fluid level should be between the high and low marks. Add automatic transmission protectant to the transmission at a ratio of 5%. For older vehicles, it's advisable to add a bottle of automatic transmission leak stopper to restore aging seals and prevent leaks. Understand the replacement cycle for automatic transmission fluid: generally, it should be changed every 2 years or 40,000 to 60,000 kilometers. During normal operation, automatic transmission fluid operates at around 120 degrees Celsius, so it's essential to use high-quality transmission fluid.

2

Share

What are the impacts of not scrapping a private car on the owner?

The impacts of not scrapping a private car on the owner are as follows: 1. Registered under the owner's name: If the car is registered under the owner's name, it may affect the renewal or annual inspection of the driver's license. Driving a scrapped vehicle, once detected, will result in fines, revocation of the driver's license, mandatory scrapping of the vehicle, and payment of associated costs. 2. Exploitation by criminals: If the owner sells the car as scrap, some criminals may retain the vehicle's identification marks such as the engine number and chassis number, and install them on other vehicles. If such a modified vehicle is involved in an accident, authorities can trace these identifiers back to the original owner, who may face trouble and unnecessary losses.

13

1

Share

Are the Dash Cam and Rearview Camera Integrated as One Unit?

The dash cam and rearview camera are not necessarily integrated as one unit; it primarily depends on the type of dash cam installed in the vehicle. There are two types of dash cams: one type is integrated with the rearview camera, displaying the rearview image on the dash cam screen when the vehicle is in reverse. The other type operates separately, making it more convenient to use both the dash cam and rearview camera without interference. Main functions of the dash cam: It helps protect the legal rights of the driver by providing video evidence. Recorded footage can be replayed to determine fault in traffic accidents. It effectively prevents fraudulent claims and roadside robberies, as the video from the dash cam can serve as evidence. It also records the route taken during road trips and any incidents that occur along the way. Functions of the rearview camera: It provides safety assistance for reversing vehicles. The rearview camera is also known as a parking assist system, reverse visual system, or onboard monitoring system. It is widely used across various vehicle types, including small, medium, and large vehicles, making it an excellent auxiliary configuration for vehicles.

19

4

Share

What are the items in Subject 3?

There are 16 items in the C1 Subject 3 test, some of which are as follows: Preparation for getting on the car: The examinee must follow the instructions of the safety officer, approach the car body, walk around the car for a week, and open the car door to get on the car after confirming safety. After getting on the car, when hearing the voice prompt "Please prepare for the test and perform fingerprint verification," first adjust the seat to a suitable position, adjust the inner and outer rearview mirrors, and fasten the seat belt. Then perform fingerprint verification. The fingerprint device is located below the air conditioning vent on the left side of the steering wheel. Night driving: After successful fingerprint verification, before starting during the daytime test, the examinee should start the light operation when hearing the voice prompt "The simulation of night light usage will start now, please operate according to the voice prompt." The night driving light simulation test will randomly select three items from the following for the test. Driving: When hearing the voice prompt "Please start," step on the clutch, shift into first gear, turn on the left turn signal (for more than 3 seconds), observe the left rearview mirror (turn left head), confirm safety, honk the horn, release the parking brake, and start smoothly, then turn off the turn signal. Rolling back is prohibited when starting on a slope.

13

5

Share

How is the climbing ability of electric vehicles?

What is the real fuel consumption of the 2021 Volvo XC60?

Is a tire pressure of 192 kPa indicating a puncture?

What Causes the Jerking Sensation When Braking in an Automatic Transmission Car?

What are the impacts of not scrapping a private car on the owner?

Are the Dash Cam and Rearview Camera Integrated as One Unit?

What are the items in Subject 3?

What do the letters on car gears represent?

Should a damaged front fender be repaired or replaced?

What brand of transmission oil should be used for the 10th-generation Civic?

Is There Any Impact When Driving Through Water That Reaches Half of the Tire?