What does 'a small horse pulling a big cart' mean?

How to Classify Sedan Levels?

Sedan levels are classified based on wheelbase and engine displacement. Here is a detailed introduction to sedan levels: 1. A-segment cars: Also known as compact cars, smaller cars are referred to as subcompact cars, or A0-segment cars, such as the Vios, Fit, and Polo. Some compact cars now feature extended wheelbases, such as the Lavida, Lamando, and Corolla, with wheelbases around 2.4 to 2.6 meters and displacements mostly between 1.0 and 1.5 liters. 2. B-segment cars: Known as midsize cars, models like the Magotan, Passat, Camry, Accord, BMW 3 Series, and Audi A4 have wheelbases around 2.7 to 2.9 meters and displacements between 1.4 and 2.5 liters. 3. C-segment cars: Referred to as executive cars, with wheelbases around 3 meters and displacements between 2.0 and 3.0 liters. Common C-segment cars include the Audi A6, BMW 5 Series, and Mercedes-Benz E-Class. 4. D-segment cars: Known as full-size luxury cars, with wheelbases ranging from 3.1 to 3.6 meters and displacements from 2.0 to 6.6 liters. Representative models include the Mercedes-Benz S-Class, BMW 7 Series, Audi A8, Lexus LS, Bentley, and Rolls-Royce.

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How to Identify Whether Motor Oil is Semi-Synthetic or Fully Synthetic?

There are two methods to determine whether motor oil is semi-synthetic or fully synthetic: 1. Packaging: Check the outer packaging of the oil, which usually indicates the type of oil. 2. Oil color: The color of the oil can also be used to distinguish between types. Mineral oil tends to have a darker color, while synthetic oil is lighter, appearing as a transparent light yellow. If labeled 'Full-Synthetic,' it is fully synthetic oil. The differences between semi-synthetic and fully synthetic oils are as follows: 1. Semi-synthetic oil is based on mineral oil refined through hydrogenation. Synthetic motor oil is derived from ethylene and propylene dispersed from natural gas or crude oil, undergoing polymerization, catalysis, and other complex chemical reactions to produce high-molecular lubricants. 2. Fully synthetic oil has a broader temperature range and longer service life. 3. For the same oil film requirements, synthetic oil has lower viscosity, while semi-synthetic oil has higher viscosity compared to synthetic oil. 4. Semi-synthetic oil is mainly used for economical vehicles, whereas fully synthetic oil is primarily used for luxury vehicles. 5. The amount of additives differs, with fully synthetic oil containing more and semi-synthetic oil containing fewer additives. 6. Fully synthetic oil has better anti-aging stability. 7. Fully synthetic oil provides better engine protection. 8. The price of fully synthetic oil is higher than that of semi-synthetic oil.

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What is the reason for the continuous flashing of the keybatt indicator light?

The reason why the keybatt keeps flashing is that the battery in the key is low on power and should be replaced. 'Key' translates to 'key', and 'batt' translates to 'battery'. The car dashboard is a device that reflects the working conditions of various vehicle systems. Common indicators include the fuel indicator, washer fluid indicator, electronic throttle indicator, front and rear fog light indicators, and warning lights. Indicator and warning lights: Timing belt indicator: Some imported cars that use timing belt drives and overhead camshafts generally have a limited service life for the engine timing belt (approximately 100,000 km), after which it must be replaced. To ensure timely replacement by maintenance personnel, a timing belt service life indicator 'T.BELT' is installed on the dashboard. Exhaust temperature warning light: Modern cars are equipped with a three-way catalytic converter on the exhaust pipe, which increases the exhaust temperature. However, excessively high exhaust temperatures can easily damage the three-way catalytic converter. Therefore, such vehicles are equipped with an exhaust temperature warning device. When the exhaust temperature warning light comes on, the driver should immediately reduce speed or stop the vehicle. Once the exhaust temperature drops, the warning light will automatically turn off (however, a fuse-type exhaust temperature warning light will remain on if not adjusted or repaired). If the exhaust temperature warning light does not turn off, the cause should be identified and the fault resolved before continuing to drive.

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What Causes the Engine Warning Light to Illuminate in a Volvo S60?

There are primarily 7 reasons why the engine warning light illuminates in a Volvo S60: Sensor Malfunction: The sensors referred to here include coolant temperature, crankshaft position, air flow, intake air temperature, and oxygen sensors. When these sensors are damaged, have poor connections, or experience signal interruptions, the vehicle's ECU cannot accurately obtain engine data, triggering the engine warning light. Fuel or Oil Quality Issues: Failure to use the fuel and oil as specified by the manufacturer may cause engine wear, leading to the illumination of the warning light. Poor Combustion of Air-Fuel Mixture: Poor combustion can result in engine carbon buildup or knocking. Once detected by the oxygen sensor and reported to the ECU, the warning light will illuminate as a warning. Issues such as faulty spark plugs, ignition coils, fuel pumps, or clogged fuel lines can all lead to poor combustion. Turbocharger Problems: The intake boost piping or turbocharger can also trigger the engine warning light. The most common issue is a damaged turbocharger, accompanied by symptoms like oil leaks, excessive oil consumption, reduced power, metallic noises, or blue/black smoke from the exhaust. Intake Issues: Problems with the vehicle's intake system can lead to clogged engine piping, and in severe cases, trigger the engine warning light. A dirty air filter that hasn't been cleaned regularly can cause intake problems. Exhaust Issues: Exhaust system faults can also cause the engine warning light to illuminate. Common causes include faulty rear oxygen sensors, catalytic converters, exhaust camshafts, or bearings, with the catalytic converter being the most frequent issue. Using leaded gasoline, lead- or silicon-based lubricant additives, physical damage to the catalytic converter, or fuel system malfunctions can all contribute to catalytic converter failure. Anti-Theft System Malfunction: If the vehicle's electronic anti-theft system fails or if there's a mismatch between the anti-theft controller and the engine ECU, the anti-theft system can prevent the engine from operating normally, while also illuminating the engine warning light. If the engine warning light illuminates, follow these steps: First, check if the engine is running normally, looking for symptoms like shaking or black smoke. If present, avoid restarting the engine. Note: Never restart the engine if the red warning light is on. If the engine can be started, turn it off and wait 5-10 minutes. Without pressing the brake, press the start button once or turn the key halfway to the 'ON' position without depressing the clutch. The vehicle will perform a self-check upon powering up. After 5-10 seconds, observe if the warning light turns off. If the warning light remains on, visit a service center as soon as possible. Technicians can use a portable diagnostic tool to read the fault codes, identify the issue, and perform targeted repairs.

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What to Pay Attention to When Buying a Car?

When negotiating the price before buying a car, pay attention to adding an engine guard plate—try to get it for free, but buy it if necessary. Be cautious of verbal promises from 4S shops. Watch out for insurance pitfalls. Inspect the car carefully. Check the odometer reading when picking up the car. Additional details are as follows: 1. Check the odometer reading when picking up the car: It should generally be 8–10 km. Inspect the radiator for debris, ensure the seat protective packaging and front plastic cover are intact, and check for any dirt on the driver/passenger seats or dashboard. 2. For pre-ordered vehicles: Pay attention to the gap between the manufacturing date and delivery date. If the gap is too long, the car might be a display or refurbished model. 3. When picking up the car: Request the production and shipping dates, and compare them carefully with the delivered vehicle. 4. After purchase: If the car is handed over to the 4S shop for licensing and paperwork, remember to note the odometer reading. 5. Inspect the exterior: When selecting a new car, ask to compare two models of the same type. Check the body gaps and paintwork. 6. Inspect the mechanical parts: Start with the engine—a well-functioning engine should have no oil stains, respond quickly when started, run smoothly without shaking, and produce even sounds without sharp or irregular noises. For new cars, check the battery status via the indicator. 7. Check the ground: Look under the car after a short drive for any signs of water or oil leakage, which can help identify hidden issues. Normally, only the exhaust pipe should have water droplets; no other parts should show leaks. 8. Inspect the tires: A new car's tires should have no damage to the sidewalls, especially the front tires, and no puncture marks on the tread. 9. Check the doors: A properly functioning door should open and close smoothly without unusual noises. The rubber seals should be intact, and closing the door should feel airtight with a slight suction effect at the end. The paint on the door frame edges should be flawless—any wear or dirt may indicate poor storage conditions. Power windows should have anti-pinch features for all four doors. 10. Inspect the interior: The interior should be clean, especially in high-contact areas. Electrical or mechanical components should operate smoothly without noise. The floor should be dry and clean. Test all interior lights to ensure they work properly. Remove the seat protective covers to check the condition of the original leather upholstery. Test fragile components like cup holders and sunglass covers to ensure they function correctly.

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Can I Bring My Phone for the Subject 2 Driving Test?

Mobile phones are not allowed during the driver's license test. Here is the relevant information: Specific regulations: The registration requirements for Subject 2 include completing 26 training hours, consisting of 2 hours for theoretical knowledge, 3 hours for simulated driving, and 21 hours for practical training. The theory and simulation parts are straightforward and are usually completed on the first day of practicing Subject 2, with most of the time spent on practical training. Test items: The C1/C2 car test includes five mandatory items: reversing into a parking space, parallel parking, stopping and starting on a slope, turning at a right angle, and driving through curves (commonly known as the S-curve).

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What does 'a small horse pulling a big cart' mean?

How to Classify Sedan Levels?

How to Identify Whether Motor Oil is Semi-Synthetic or Fully Synthetic?

What is the reason for the continuous flashing of the keybatt indicator light?

What Causes the Engine Warning Light to Illuminate in a Volvo S60?

What to Pay Attention to When Buying a Car?

Can I Bring My Phone for the Subject 2 Driving Test?

When Should Engine Oil Be Changed Based on Color?

What is the normal cylinder pressure for a car engine?

What are the steps for bumper removal and installation?

What are the three modes of KTM390?