What is the Buick Excelle engine?
4 Answers
The all-new Buick Excelle continues to use the small-displacement 1.0T and 1.3T three-cylinder engines, with the engine model being LJI. Here is the relevant information: Buick Excelle Engine Overview: Thanks to the adoption of Ecotec dual-injection turbocharging technology, this 1.0T three-cylinder engine can sustain maximum torque output from 1500 rpm to 5200 rpm. In comparison, the previous-generation 1.5L four-cylinder engine only reached maximum torque at 4400 rpm, making the new version more powerful. The Excelle features a 1.3T dual-injection turbocharged engine built on a new small-engine architecture, delivering a maximum power of 120 kW and a maximum torque of 230 N·m. It not only outperforms the previous-generation models but also achieves better fuel efficiency. Advanced turbocharging technology significantly mitigates the traditional drawback of delayed power response in turbocharged engines, ensuring strong low-rpm torque for quicker acceleration. Engine Working Principle: An engine is a machine that converts one form of energy into mechanical energy. Its function is to transform the chemical energy of burning liquid or gas into thermal energy through combustion, and then convert the thermal energy into mechanical energy via expansion to output power. An engine is a complex machine composed of numerous mechanisms and systems. Whether it's a gasoline or diesel engine, a four-stroke or two-stroke engine, or a single-cylinder or multi-cylinder engine, its purpose is to complete energy conversion, achieve a working cycle, and ensure long-term continuous operation.
The engine of the Buick Excelle has undergone significant changes in recent years, depending on which year you're asking about. The older models mostly used the 1.5L naturally aspirated engine, model L2B if I remember correctly. Many GM vehicles used this engine, like the classic Excelle. It's quite durable, but the fuel consumption and power are relatively average. Around 2018, after the facelift, most models switched to 1.0T and 1.3T three-cylinder turbocharged engines, paired with a dual-clutch or 6AT transmission. The 1.3T engine really delivers good power, feeling quite responsive when you step on the gas, but the three-cylinder setup made many people hesitant. Then, in the last year or two, GM probably listened to market feedback and switched back to four-cylinder engines. The current Excelle mainly features a 1.5L four-cylinder naturally aspirated engine and a 1.3T three-cylinder with a 48V mild hybrid system. The 1.5L focuses on stability and reliability, while the 1.3T mild hybrid aims for better fuel efficiency and reduced vibration during startup. If you're buying a used car, pay close attention to the year and engine model—there are quite big differences.
My neighbor bought the Excelle sedan two years ago mainly for its reliable engine. That 1.5L four-cylinder unit is said to share its roots with the old Buick Excelle. While the technology isn't cutting-edge - no direct injection or turbocharging - its simple structure means any local garage can service it, with oil changes and filter replacements being dirt cheap. He's driven it for over two years with just routine maintenance, never needing engine repairs. It's adequate for city commuting - not exactly punchy off the line but smooth, with decent fuel economy averaging 7-8L/100km. He always says this engine is like an old ox - sturdy and unfussy about fuel quality. Highway overtaking might feel sluggish, but for pure family duties like grocery runs and school pickups, it's more than sufficient - a no-nonsense, hassle-free choice.
I've studied the Buick Excelle's engine for a while and find GM's approach quite interesting. Between 2018-2020 models, they heavily promoted three-cylinder engines like the 1.3T Ecotec, which delivered 163hp maximum power - outperforming many 1.5L four-cylinder engines on paper. To suppress vibrations, they implemented multiple technologies including balance shafts, silent chains, and rubber bushings. The initial driving experience was decent, but after a few years, especially during cold winter starts, noticeable steering wheel vibrations became apparent. Facing considerable user feedback, GM reintroduced the 1.5L DVVT four-cylinder engine paired with a 6AT transmission for entry-level models. The current lineup now offers another option - a 48V mild hybrid system based on the 1.3T engine, where the electric motor assists at low speeds and significantly smoothens auto start-stop operations. This shows GM's market-sensitive yet somewhat indecisive engine strategy, constantly trying to balance fuel efficiency with user experience.
