
The Buick Excelle is equipped with small-displacement 1.0T and 1.3T three-cylinder engines, featuring Ecotec dual-injection turbocharging technology. Below is a detailed introduction to the Buick Excelle's engine: 1. The Excelle 1.0T Elite model is powered by a 1.0T engine with a maximum power of 125 horsepower and a maximum torque of 170 Nm, paired with a 6-speed dual-clutch transmission. The Excelle 1.3T Elite model, on the other hand, is equipped with a 1.3T engine delivering a maximum power of 163 horsepower and a maximum torque of 230 Nm, mated to a 6-speed automatic transmission. 2. A three-cylinder engine consists of three cylinders arranged in a single block sharing a common crankshaft to output power, primarily converting chemical energy into mechanical energy. 3. Thanks to the Ecotec dual-injection turbocharging technology, the three-cylinder engine can sustain maximum torque output.

The older Buick Excelle models commonly seen on the road are mainly equipped with 1.6L and 1.8L naturally aspirated engines, with GM's LDE and 2H0 series being the most frequently encountered. Last time when helping my neighbor inspect his 2012 Excelle GT with the 1.6L engine, the belt noise during acceleration was particularly noticeable, which was eventually resolved by replacing the entire idler pulley set. The 1.8L version delivers a maximum of 135 horsepower, but its urban fuel consumption exceeds 9L/100km, making it thirstier than Japanese cars of the same displacement. Although these cast-iron engines are durable, their timing belts require replacement every 60,000 kilometers. After the 2015 update to the L2B 1.5L all-aluminum engine, the weight was reduced by 21kg and fuel consumption dropped to 7.8L/100km, though its 92 horsepower makes overtaking noticeably sluggish. The most powerful variant is the 1.6T turbocharged engine with 184 horsepower paired with a 6AT transmission, capable of easily reaching 200km/h on highways, but oil burning issues are quite common. The current new models have switched to a 1.3T three-cylinder engine producing 163 horsepower with 48V mild hybrid system, where slight steering wheel vibration can be felt at traffic lights, but the fuel consumption is only 5.3L/100km.

I've handled over a dozen engines GM installed in the Excelle, and the most classic is definitely the L2B 1.5L naturally aspirated unit. It saw massive installation volumes in 2015, featuring an all-aluminum block with DVVT technology, delivering 84kW max power. While it offers decent low-RPM torque, there's noticeable power drop after 4000rpm. During repairs, I've observed these engines are prone to spark plug carbon buildup, recommending cleaning every 20,000km. The early 1.6L version had flawed intake manifold design, frequently triggering P0171 lean mixture trouble codes. The newer 1.3T three-cylinder variant uses dual fuel injectors, significantly reducing cold-start vibrations, but its turbocharger pipes are prone to air leaks - last year I replaced the clamps three times for one owner. Buick added hydraulic mounts for this three-cylinder engine, though the damping effect diminishes after 70,000-80,000km of driving.

Having worked on Buick cars for eight years, I'm well-versed in the common issues of the Excelle engine. The older 1.6L models frequently suffer from timing belt skipping teeth and valve collision - replacing the belt must always include the water pump. The 1.5L L2B engine's throttle body gets dirty exceptionally easily, needing cleaning every three months. While the 1.3T three-cylinder engine is fuel-efficient, its turbocharger solenoid valve has high failure rates - if the engine light comes on, that's usually the culprit. Ignition coils are consumables too, requiring replacement every three years in humid climates. The cast iron engine's oil pan tends to leak - applying sealant is less effective than directly replacing the gasket. For newer 48V mild hybrid models, watch the BSG motor carefully as voltage instability can cause auto start-stop failure.


