
A typical 2.0t engine consumes about 2 to 3 liters more fuel per 100 kilometers compared to a 1.5t engine. Generally, the larger the displacement, the higher the corresponding fuel consumption. Fuel-saving tips: Ensure correct tire pressure: Pressure should not be too high or too low, as both conditions will increase fuel consumption. Regularly check tire pressure to avoid affecting driving fuel economy. Consider changing tire size: Wider tires increase resistance. Unless special traction requirements exist, overly wide tires will only increase fuel consumption. Maintain the car body: Dents on the body will increase aerodynamic resistance during driving. Similarly, decorations on the body will only add resistance. Master driving techniques: When starting the vehicle, choose a lower gear, accelerate smoothly and gradually. Learn to listen to the engine sound and shift gears from low to high as the car reaches certain speeds. During driving, use direct gear at medium speed to save fuel. The economical speed for most cars is between 65-90km/h. Driving at this speed range is the most fuel-efficient.

I've been driving for several years, mainly for city commuting. My 1.5T car typically consumes 7-8L/100km, while my friend's 2.0T car on the same route might use 8-10L, a difference of about 1-2L. Calculated over 1,000 kilometers per month, the 1.5T saves 10-20 liters of fuel, which translates to roughly 100 yuan in savings—not very significant but adds up to subsidize fuel cards. On highways, the gap narrows because the 2.0T's horsepower is more stable, making it less fuel-intensive. Adopting a gentle driving style, like anticipating braking and avoiding sudden acceleration, can make both engines equally fuel-efficient. Don't fixate on displacement differences—vehicle design and aerodynamics also play a big role. For example, SUVs consume more fuel than sedans. Personal experience should take priority.

As an ordinary office worker who commutes by car every day, I really care about fuel costs. The 1.5T engine I use averages 7.5L/100km, saving about 1.5L compared to my colleague's 2.0T. Calculating for 15,000 kilometers a year, that's 225 liters of fuel saved, equivalent to over a thousand RMB. Although the 2.0T offers stronger power for overtaking, the 1.5T is more considerate in city traffic jams, and its efficiency can be further improved with proper tire pressure and high-quality engine oil. The gap widens as the car ages, with older engines potentially consuming 0.5-1L more. Regularly monitoring OBD onboard computer data and avoiding heavy loads on long trips can make driving more worry-free.

I've modified quite a few cars. The key fuel consumption difference between 1.5T and 2.0T engines lies in engine tuning. Generally, 1.5T saves about 1-2L/100km by optimizing small displacement with turbocharging. For example, Honda's 1.5T does around 8L in city driving, while Ford's 2.0T does 9-10L - slightly worse but nearly equal during highway cruising. Driving style makes a big difference - flooring it can widen the gap to over 2L, while normal driving actually narrows it. For daily use, don't sweat this difference - both can be efficient with proper maintenance.


