What is the Difference Between 120 Horsepower and 170 Horsepower?

2 Answers
SanFinley
07/24/25 2:11am
The difference between 120 horsepower and 170 horsepower is a gap of 50 horsepower. Horsepower is a unit of power, where 1 horsepower equals the work done to lift a 75-kilogram object 1 meter per second. This means that the greater the horsepower, the more work can be done. Horsepower is an important metric for measuring a car's power. The engine is the primary device that provides this power. Below is a detailed introduction about car engines: Overview: A car engine is the device that provides power to a vehicle, determining its performance, fuel efficiency, stability, and environmental friendliness. Depending on the power source, car engines can be categorized into diesel engines, gasoline engines, electric motors for electric vehicles, and hybrid systems, among others. Others: Common gasoline and diesel engines are both types of reciprocating piston internal combustion engines, capable of converting the chemical energy of fuel into the mechanical energy of piston motion to deliver power externally. Gasoline engines have higher rotational speeds, lighter weight, lower noise, easier starting, and lower manufacturing costs. Diesel engines have higher compression ratios, greater thermal efficiency, and better fuel economy and emission performance compared to gasoline engines.
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Hylla
08/10/25 9:43pm
Having driven both 120-horsepower and 170-horsepower cars, the difference is quite noticeable. A 120-horsepower car is sufficient for daily commuting, though it starts a bit slower at traffic lights in the city, and you need to leave some room when overtaking. On the highway, changing lanes or overtaking can feel a bit strenuous. With 170 horsepower, the acceleration is much stronger, with a noticeable push-back feeling, and the 0 to 100 km/h acceleration is about 3 seconds faster. On the highway, it’s effortless to reach 180 km/h without any pressure. During my daily mountain commute, the 120-horsepower car clearly struggles uphill, and the power weakens further with the air conditioning on, while the 170-horsepower car doesn’t have this issue. However, the 170-horsepower car does consume a bit more fuel, around 1 liter extra in city driving. Power size affects driving confidence, but safety comes first—just choose based on your needs.
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