Here's how car speedometers calculate how fast your vehicle is going. And here's why they may not always be accurate.

Tesla issued a recall for 48,184 Model 3 cars due to a problem with the speedometer's display while in "Track Mode." The company will perform an over-the-air software update to fix the issue ...

Speedometer: Aftermarket modifications, such as different tire and wheel sizes or a change in the differential gearing, can cause speedometer inaccuracy. GPS: These devices are positional speedometers ...

Q: What would be more accurate, my vehicles speedometer or a GPS I have on my dashboard? A: They both can be accurate and inaccurate. Speedometer: Aftermarket modifications, such as different tire and ...

In a Jan. 22, 2013 photo, the speedometer of a 1984 Monte Carlo is seen at the GM Heritage Center in Sterling Heights, Mich. For years, most speedometers topped out at 120, a speed that many cars ...

NEWARK, Del, Jan. 03, 2025 (GLOBE NEWSWIRE) -- The global digital speedometers industry is projected to reach a valuation of USD 10,735.6 million in 2024, growing to USD 14,246.3 million by 2034. This ...

We performed no testing on our first cover subject vehicle, the Kurtis Sport Car—at least not until 2019 when MotorTrend purchased that fully restored car (0–60 in 15.3 seconds!). But we ...

DETROIT (AP) — The speedometer on the Toyota Yaris says the tiny car can go 140 miles per hour. In reality, the bulbous subcompact's 106-horsepower engine and automatic transmission can't push it any ...

From the stopwatch/fifth-wheel/radar era to GPS and from 0–60 and the quarter mile to the figure-eight test and more, we’ve come a long way. MotorTrend didn’t invent automotive performance testing as ...