What is the minimum speed limit when the highway speed limit is 120km/h?

Should the Audi A5 use 95 or 98 octane gasoline?

Audi A5 should use 95 octane gasoline, as this fuel grade is recommended in the vehicle's official user manual. In addition to checking the suitable gasoline grade in the user manual, you can also find it indicated on the fuel tank cap of the Audi A5. Typically, the appropriate fuel grade can also be determined based on the engine's compression ratio. Vehicles with an engine compression ratio between 8.6-9.9 should use 92 octane gasoline, those between 10.0-11.5 should use 95 octane gasoline, and if the compression ratio is higher, 98 octane gasoline is recommended. However, with the application of new technologies, the compression ratio alone cannot determine the required gasoline grade, as high compression ratio engines can also be tuned to use lower octane gasoline. This is because, besides the compression ratio, other factors such as ignition timing, turbocharging technology, and Atkinson cycle technology also play a role. Generally, the higher the gasoline grade, the higher the octane number and the better the anti-knock performance. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. If the Audi A5 occasionally uses the wrong gasoline grade, simply switch back to the correct grade after consumption. However, long-term use of the wrong gasoline grade can have the following effects: For vehicles recommended to use lower octane gasoline, using higher octane gasoline will not cause damage, but the increase in octane number can alter the fuel's ignition point, leading to delayed combustion in the engine. This reduces the engine's power output and thermal efficiency, resulting in poorer performance. For vehicles recommended to use higher octane gasoline, using lower octane gasoline can cause engine knocking. Due to the significantly lower octane number, the gasoline's ignition point decreases, causing premature ignition during the compression stroke. If detonation occurs before the spark plug ignites, resistance will arise during the upward stroke. This resistance makes the engine run very unstably. If the knocking is imperceptible, it only increases noise without obvious damage to the engine. However, noticeable knocking indicates severe engine conditions, affecting not only driving stability but also causing abnormal wear on the pistons and cylinders, and in severe cases, cylinder scoring.

9

3

Share

Will the points on the driver's license be cleared on the expiration day?

Points can be deducted on the day the driver's license expires. As long as the fines for the points are paid off on that day, the points will be cleared. The clearing time is until 24:00 Beijing time on the expiration day. As long as the points do not reach 12 within one scoring cycle and there are no outstanding violations (generally referring to C1), the previous points will be reset to 0 at the beginning of the next scoring cycle. The calculation method for the driver's license scoring cycle is as follows: 1. It starts from the day the driver's license is initially issued, with every 12 months constituting a cycle. According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses," Article 65, the cumulative scoring cycle for road traffic safety violations (i.e., the scoring cycle) is 12 months, with a maximum of 12 points, calculated from the date of initial issuance of the motor vehicle driver's license; 2. Based on the severity of the road traffic safety violation, the points for a single violation can be: 12 points, 6 points, 3 points, 2 points, or 1 point; 3. Article 66 states that for a motor vehicle driver's road traffic safety violations, penalties and points are executed simultaneously. If a motor vehicle driver commits more than one violation at a time, the points should be calculated separately and accumulated.

7

0

Share

What is the fuel consumption of the Kia K2 1.4L model?

The actual fuel consumption of the Kia K2 automatic 1.4L is 7.2 liters per 100 kilometers. In terms of design, the Kia K2 inherits the family-style design concept, highly unified with the K5 style, but more sharp and distinctive. The typical tiger-nose front grille integrates with the sharp headlights, forming a bold "V" shape. Here are additional details: Specific introduction: In terms of dimensions, the K2 measures 4370mm in length, 1700mm in width, and 1460mm in height, with a wheelbase of 2570mm, providing ample interior space. Although positioned as a compact car, it nearly meets the standards of a compact sedan, making it highly competitive in today's small car market.

10

0

Share

How to Turn on the Fog Lights of the New Jetta?

First, locate the fog light switch, which is a rotary knob on the panel to the left of the driver's seat. The method to turn on the fog lights is as follows: 1. Rotate the knob switch clockwise to the position for low beam headlights to turn them on. 2. After turning the knob to the low beam position, pull the knob backward one notch to activate the fog lights. Here is some additional information about fog lights: 1. The purpose of fog lights is to make your vehicle visible to others in conditions of reduced visibility, such as fog or heavy rain. 2. Fog light sources need to have strong penetration. Most vehicles use halogen fog lights, while LED fog lights are a more advanced option.

7

1

Share

How to activate the single-color ambient lighting in Q5L?

q5l ambient lighting activation method is: 1. Select the MENU button in the infotainment system: MENU is sometimes also referred to as menu, just click on the menu. 2. Select Car: Under the menu, select Car. 3. Select the car's left control button: On the car's interface, select the car's left control button. 4. Select Car Settings: After selecting the car's left button, click on Car Settings. 5. Select Interior Lighting: In the car settings, select Interior Lighting. 6. After activation, when the ignition switch is turned on and the low beam headlights are activated, the interior ambient lighting will illuminate. Car ambient lighting is a light source that enhances the atmosphere inside the car, increasing sensory stimulation and elevating the overall vehicle's class.

1

4

Share

How to Use the BMW X4 Paddle Shifters?

BMW paddle shifters are used as follows: 1. First, select M mode/S mode: Push the gear lever to the D position, then you can shift gears using the paddles. This means first engaging the manual mode or sport mode with the gear lever. 2. Then, freely switch gears using the paddles when the engine speed is appropriate. 3. If you experience jerking or slow response when using the paddle shifters: It may be because you didn't accurately match the appropriate speed and engine RPM for shifting. 4. Generally, when accelerating to no more than 20 km/h: You can shift to 2nd gear, with the RPM around 1500. When the speed reaches 30 km/h, you can shift to 3rd gear. 5. Paddle shifters are gear-shifting devices installed for semi-automatic clutches in cars: Their function is to allow gear shifting without pressing the clutch pedal, directly by pulling the paddle shifters.

16

2

Share

What is the minimum speed limit when the highway speed limit is 120km/h?

Should the Audi A5 use 95 or 98 octane gasoline?

Will the points on the driver's license be cleared on the expiration day?

What is the fuel consumption of the Kia K2 1.4L model?

How to Turn on the Fog Lights of the New Jetta?

How to activate the single-color ambient lighting in Q5L?

How to Use the BMW X4 Paddle Shifters?

Is the driving license now 12 points or 18 points?

What are the reasons why the Kia K2 cannot start despite having electricity and oil?

Can the Driving Association Replace a Driver's License?

Can the Audi A5 with RS5 body kit be registered?