Is the Mitsubishi 4A91 engine fuel-efficient?
2 Answers
The Mitsubishi 4A91 engine belongs to the mid-to-high-end configuration, featuring advantages such as compact size, lightweight, low fuel consumption, and environmental friendliness. The specific performance is as follows: 1. Compact and lightweight: This engine adopts an aluminum cylinder block and a large number of resin components, utilizing a series of simplified structures such as hollow camshafts, making it approximately 25kg lighter than previous engines. 2. Low fuel consumption: This engine employs MIVEC (Mitsubishi Innovative Valve timing Electronic Control system) technology, which optimizes the timing phase of valve opening, changes the valve lift, increases air intake, and forms a wide range of engine speeds to achieve low fuel consumption. 3. Environmental friendliness: This engine has already met the Euro 5 emission standards, achieving low emissions.
I've driven cars equipped with the Mitsubishi 4A91 engine for several years and found it truly fuel-efficient. For daily urban commuting, the average fuel consumption is around 7 liters, and it can drop below 5 liters on highways, which is significantly more economical than other engines of the same displacement. This engine features a lightweight aluminum alloy cylinder block, which reduces weight and improves rotational speed. Combined with Mitsubishi's MIVEC technology that optimizes valve control, it achieves high combustion efficiency and minimizes waste. Maintenance is also straightforward—regular oil changes and air filter replacements are enough to maintain low fuel consumption. I've driven several compact models like the Lancer equipped with this engine, and they have low failure rates and affordable maintenance costs. Overall, if you prioritize fuel savings in daily use, choosing this engine is a smart move—it saves a lot on expenses and delivers smooth, powerful performance.
