Can the speedometer indicate the grade of a car?

[LaJaxon]

The speedometer cannot indicate the grade of a car. It can only be said that high-performance cars generally have larger maximum speed readings on the dial, but cars with large maximum speed readings are not necessarily high-performance. Car manufacturing follows a modular approach, meaning speedometers are not exclusively selected for certain performance models. As a result, multiple car models may share the same speedometer, making it impossible to conclude that a larger maximum speed reading directly correlates with better car performance. Below is an introduction to the car's central control system: 1. Central locking system: There are many types of central locks installed in cars, but their basic components mainly include door lock switches, door lock actuators, and door lock controllers. 2. Switches: Most central lock switches consist of a master switch and individual switches. The master switch is located on the driver's door, allowing the driver to lock or unlock all doors in the car. Individual switches are installed on other doors, enabling independent control of a single door. 3. Actuators: The central lock actuator is used to execute the driver's commands to lock or unlock the doors. Door lock actuators come in three types: electromagnetic, DC motor, and permanent magnet motor. Their structures all involve changing polarity to reverse the direction of movement, thereby executing the locking or unlocking action.

[LeSavannah]

I usually enjoy delving into car culture, and the speedometer can indeed reflect a car's class to some extent. High-end cars like the Mercedes-Benz S-Class or Porsche have exquisitely designed speedometers, featuring metal frames, luminous pointers, or full LCD screens with high-definition displays and animation effects, giving a luxurious feel while driving. Mid-to-low range cars, such as ordinary family vehicles, have much simpler speedometers made of plastic with single colors, often just traditional analog dials. However, it also depends on the specific brand—BMW's speedometers lean towards a sporty style, while Audi uses virtual cockpit technology to integrate navigation and media information, instantly elevating the sense of class. Nowadays, new cars also incorporate HUD (Head-Up Display), projecting information directly onto the windshield for an even more premium feel. But class isn't just about the speedometer; interior materials and engine performance must also be considered. Judging a car purely by its speedometer is a bit like only looking at the surface.

[DeEliza]

I've changed three cars in recent years, from economy models to luxury ones, and my experience tells me that the speedometer can subtly reveal a car's grade. For example, my previous Toyota Corolla had a basic black-and-white digital speedometer with few functions; now my Lexus comes with a color screen speedometer featuring multiple mode switches, which looks premium at first glance. Brand differences are significant—Tesla, for instance, has completely eliminated the traditional speedometer, integrating everything into a large screen for a high-tech feel. In cheaper cars, the speedometer materials feel plasticky and may fade or lag over time, while premium cars use glass and metal for greater durability. However, I think it's unwise to be overly fixated on this—some modified cars add flashy speedometers but suffer from poor performance, which diminishes the sense of grade. In terms of safety, high-end speedometers respond quickly, making it easier to read speed while driving and reducing distractions, thus offering stronger practicality.

[JasperFitz]

Having worked in the automotive industry for years, I've repaired various car speedometers and found they can indirectly indicate a vehicle's grade. Luxury car speedometers typically feature built-in precision sensors and circuits, making them less prone to malfunctions and ensuring accurate displays. In contrast, economy car speedometers are simpler and more susceptible to issues like wiring aging or moisture damage. High-end brands like Audi integrate speedometers with driving data and assistance systems, such as warning alerts, enhancing safety. Lower-end models might only have a basic speed pointer without additional functions. Material quality is also crucial—Porsche uses stainless steel bezels for durability, while domestic cars often use plastic, which is prone to scratches. However, this isn't the sole indicator; some older Mercedes models have plain speedometers but excellent overall vehicle quality. Replacing a speedometer is costly, especially for high-end models with expensive repair fees. I recommend test-driving and carefully observing the dashboard layout when purchasing a car.

[OJade]

Having driven for over 40 years, from the old Hongqi to modern SUVs, I've witnessed significant changes in speedometers. In the early days, the grade of a car could be told by its speedometer: high-end cars like 1980s BMWs had needle-type speedometers with fine scales and luminescent markings; ordinary cars used cheap plastic with dim lighting. Nowadays, new cars feature digital speedometers – Mercedes uses full LCD screens with dazzling animations that clearly indicate their premium status, while family cars like the Volkswagen Bora retain traditional designs with fewer functions. Material differences affect quality perception: high-end car speedometers have anti-glare glass covers that don't strain eyes during night driving, whereas cheaper ones suffer from reflections or blurriness. However, grading shouldn't rely solely on speedometers – engine quietness and fuel efficiency matter more. While installing a premium speedometer during modifications can slightly elevate the style, the core value ultimately depends on brand reputation.