Is driving at 60 mph in 4th gear fuel-consuming?

[McAniyah]

Driving at 60 mph in 4th gear is not fuel-consuming. However, if the speed exceeds 70 mph in 4th gear, it becomes fuel-consuming. Generally, when the speed reaches 60 mph, it is advisable to shift to 5th gear. The gear and speed of the vehicle need to match each other, but this matching refers to a range, not an exact number. If the speed exceeds the matched range, the vehicle may stall. Fuel-saving tips for driving: Maintain a steady speed. Vehicles have an economical speed range, and driving within this range can save fuel. During operation, driving at a constant speed in a straight line is the most fuel-efficient. For small-displacement models, 60-80 km/h is more fuel-efficient, while for medium-displacement models, 80-100 km/h is more fuel-efficient. Driving within the economical speed range helps save fuel. Start gently. When starting the car, press the accelerator pedal gently to avoid flooring the accelerator, allowing the car to accelerate slowly. When the car reaches a certain speed, shift gears promptly to avoid driving in low gear. For automatic transmission cars, the two-foot throttle method can be used to accelerate quickly, improving fuel utilization.

[SanBraxton]

I've been driving manual transmission cars for over a decade and am very sensitive to gear-speed matching. Driving at 60 mph in 4th gear is indeed more fuel-consuming because the engine RPM runs relatively high at high speeds in 4th gear. I usually shift to 5th gear when reaching about 50 km/h, which keeps the RPM stable around 1800. If you use 4th gear at 60 mph, the RPM might surge to 2500, resulting in at least 10% higher fuel consumption compared to 5th gear. This high-gear-low-speed driving is especially fuel-intensive during frequent gear shifts in traffic jams. I remember one test where driving 100 km on the highway averaged 8.2 liters in 4th gear, while 5th gear only needed 7.1 liters. I suggest breaking this habit and reserving 4th gear for overtaking in urban areas.

[Gertrude]

As someone who frequently tests vehicle performance, I can confidently say that driving at 60 mph in 4th gear is not fuel-efficient. In this state, the engine operates at a higher RPM, increasing fuel injection volume. Modern vehicles achieve optimal fuel economy between 1500-2000 RPM, and driving at 60 mph in 4th gear pushes the RPM above 2200. This driving style consumes 1-2 liters more fuel per 100 kilometers compared to using 5th gear. I once tested this with an onboard computer and found that for every 500 RPM increase beyond 2200, fuel consumption rises by 8%. With a manual transmission, it's advisable to upshift as early as possible—shifting to 5th gear at 40 mph is more reasonable. This approach not only saves fuel but also reduces carbon buildup.

[LeZoe]

Driving at 60 mph in 4th gear consumes quite a bit of fuel. I pay close attention to the tachometer while driving—usually in the city at 60 km/h, I use 5th gear, keeping the RPM at 1600, which is very fuel-efficient. In 4th gear, the RPM exceeds 2000, and you can clearly hear the engine noise increase. I recommend shifting to 5th gear at 40 km/h to avoid lugging the engine and causing damage. Using 4th gear for long highway drives can also lead to carbon buildup, which in turn increases fuel consumption. Try comparing different gears—the difference in fuel consumption is quite noticeable.

[McOlivia]

It depends on the specific situation. For small family cars, using 4th gear at 60 km/h is indeed too high. Based on my experience, the RPM in this condition is about 500 higher than in 5th gear, resulting in approximately 0.8 liters more fuel consumption per 100 km. However, exceptions exist for large-displacement vehicles or when climbing hills. I've driven 2.0T models where using 4th gear at 60 mph actually saves fuel due to turbo engagement. The key is to watch the tachometer - below 2000 RPM is more economical. If you frequently drive like this, I recommend switching to full synthetic oil to reduce wear.

[StLayla]

Driving at 60 mph in 4th gear does indeed increase fuel consumption. I usually pay special attention to gear matching and found that using 4th gear at 60 mph increases fuel consumption by at least 15%. The engine's thermal efficiency decreases when operating at 2500 rpm, leading to incomplete combustion of gasoline. Driving like this for a long time also affects the lifespan of the spark plugs. I recommend developing good shifting habits, such as shifting to 5th gear when the speed reaches 45 km/h, which is both fuel-efficient and quieter. This can save a significant amount of fuel costs annually and is also beneficial for vehicle maintenance.