What does 100 mph mean?

2 Answers
MacColeman
07/25/25 12:29am
100 mph = 100 km/h = 100 kilometers per hour. Here is the relevant introduction: 1. Driving speed: There are two ways to express the driving speed of a car, one is "kilometers per hour (Km/h)", and the other is "miles per hour (MPH)". Generally, Japanese and Korean car brands and most European car brands are accustomed to using "kilometers per hour" to express speed, while the North American market usually prefers "miles per hour". As for domestic car models, including most imported models, they all use "kilometers per hour" to express speed. 2. Origin: The common saying of how many "ma" (code) the speed is originated from the speed unit "mile". Originally, one mile was equal to 1 mile per hour, which is approximately equal to 1.6 kilometers per hour when converted to the metric system. Later, the metric system became internationally common.
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Brynlee
08/10/25 3:45pm
As an average driver, driving at 100 mph means 100 miles per hour, which is roughly 160 km/h—a fairly common speed on highways. I've tried it before in my family car by pressing the accelerator harder, but the wind noise was intense, fuel consumption spiked, and the car felt unstable if the tire pressure wasn’t right. Safety-wise, be extra cautious—braking distance at 100 mph is many times longer than usual, raising the risk of rear-end collisions. It’s best to only attempt this on open roads and check tire wear. For daily driving, sticking to the speed limit is wiser—it saves fuel and keeps you safe.
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