
The difference between 122 horsepower and 135 horsepower lies solely in the engine tuning. Below is an introduction to relevant information about automotive engine horsepower: Definition of horsepower: Horsepower is a commonly used unit of measurement for power in engineering technology, proposed by James Watt. 1 horsepower is approximately equal to 735 watts. Generally, it refers to metric horsepower rather than imperial horsepower. 1 horsepower equals the work of completing 75 kilogram-force meters in 1 second, also equal to 0.735 kilowatts, or metric horsepower. 1 imperial horsepower equals 550 foot-pounds per second, equal to 76 kilogram-force meters per second, or 0.746 kilowatts. Metric horsepower: Metric horsepower, also known as metric horsepower, is defined entirely artificially to be very close to the value of imperial horsepower. It is defined that 1 metric horsepower is the work of completing 75 kilogram-force meters in 1 second. That is: 1 metric horsepower = 75 kilogram-force meters/second = 735 watts.

122 horsepower and 135 horsepower may seem close on paper, but the real-world difference is significant. A 135-horsepower car accelerates noticeably faster, delivering a stronger push-back sensation when overtaking. On highways, the 135-horsepower model effortlessly reaches 75 mph (120 km/h), while the 122-horsepower version requires deeper throttle input. Fuel consumption-wise, despite the mere 13-horsepower gap, the 135-horsepower variant may consume slightly more in city driving but proves more efficient on long journeys. For families frequently traveling with full luggage loads, the 135-horsepower car tackles inclines with ease, preventing transmission strain. While this power difference might be negligible in grocery-getters, mountain drivers or tuning enthusiasts would unequivocally choose the 135-horsepower option.

I've worked in fleet management for over a decade and driven many vehicles with different horsepower ratings. The difference between 122hp and 135hp mainly lies in engine tuning. The 135hp version typically has quicker turbo response, with particularly noticeable power surge after 3000rpm. While the difference might be negligible in city driving, the 135hp model shows superior staying power on highways, making overtaking large trucks significantly safer. The 122hp version clearly struggles when fully loaded, especially noticeable when running air conditioning in summer. In terms of fuel consumption, the 135hp model only consumes about 0.5L more than the 122hp under normal driving conditions - the gap only widens during aggressive driving. For average users planning long-term ownership, the 135hp is worth the extra investment, particularly for owners planning to keep their vehicles for 7-8 years - this small additional cost pays off.

The core difference between the two horsepower levels lies in the transmission pairing. The 122-horsepower model often comes with a CVT transmission, offering smooth acceleration but weaker explosive power. The 135-horsepower version mostly features a dual-clutch transmission, shifting a half-beat faster, allowing it to pull ahead right from a red light start. In real-world experience, the 122-horsepower model needs to downshift two gears when climbing hills, revving up to 4000 rpm to muster enough power, whereas the 135-horsepower version handles it easily with just one downshift, with significantly less engine noise. When overtaking at speeds above 100 km/h, the 122-horsepower model requires a much longer distance to prepare, while the 135-horsepower version can slip through with just a slight press of the accelerator. The difference is minimal in city driving, but if you frequently travel on provincial highways, the 135-horsepower model is truly the better choice.


