As an owner, you may have wondered about the lifespan of semi-trucks. Semi-trucks have a longer lifespan than other vehicles due to their durable engines, which are approximately six times the size of a standard automobile engine. However, their lifespan depends on their usage frequency and maintenance.
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Lifespan of Semi Trucks
Proper care and maintenance can help semi-trucks last up to one million or 750,000 miles. The average semi-truck covers 45,000 miles annually and can last around 10 to 15 years with regular maintenance of its internal components, including the clutch, gearbox, and shocks. However, the mileage can vary depending on the company you drive for and the type of freight you haul.
Number of Gears in a Semi Truck
The transmission is one of the most critical components of a semi-truck. It comprises a series of gears that regulate the truck’s speed and torque. While the number of gears in a transmission depends on the car’s age and model, a standard semi-truck has ten gears. However, it’s common for big rigs to have 13, 15, or even 18 gears to slow down and speed up while hauling heavy loads on different inclines and terrains.
Mileage Considerations
When purchasing a used semi-truck, it’s crucial to consider its mileage. The average mileage of a semi-truck is 750,000 miles or 45,000 miles per year. Beyond these figures, the vehicle may have increased wear and tear and decreased fuel efficiency.
How Often Do Semi-Trucks Break Down?
According to a study by the National Institute for Occupational Safety and Health, semi-trucks break down an average of once every 10,000 miles when 1,200 truck drivers are surveyed. These breakdowns typically involve engine, tire, and fuel problems and often occur on interstate highways. The study also found that one-third of all breakdowns are due to driver error, which is unsurprising given the long hauling hours and monotonous truck driving. Additionally, reckless driving, such as overspeeding, overtaking, or making wrong U-turns, can lead to loss of control and breakdowns.
Properly Caring for a Semi-Truck
Caring for your semi-truck correctly allows for a longer lifespan and optimal performance. Here are some tips to follow:
- Keep your truck updated with regular maintenance, including oil changes, tire rotations, and engine tune-ups.
- Inspect every component to ensure it is in working order. If you’re not mechanically inclined, many truck stop services can help with basic maintenance and repairs.
- Always maintain a fully functional spare tire, jack, and lug wrench.
- Check that the brakes, lights, and other safety features are functioning correctly.
- Check your radiator regularly for small leaks and top off any low fluids to prevent engine overheating.
Conclusion
A semi-truck can be an excellent long-term companion on the road, lasting up to 15 years and covering 45,000 miles annually. However, to avoid costly breakdowns, it is essential to be proactive with up-to-date maintenance and inspections. In addition to the tips above, remember not to overload your semi-truck, which can lead to a quick breakdown of critical mechanical components such as the engine, gearbox, clutch, and tires.
