Is the Buick Regal a Three-Cylinder or Four-Cylinder?

[VanBrielle]

Buick Regal is equipped with a 4-cylinder engine. A four-cylinder engine, also known as a four-cylinder power unit, is a machine capable of converting one form of energy into another more useful form. Below are the differences between hatchbacks and sedans: Space differences: The absence of a trunk in a hatchback significantly reduces the overall vehicle volume, which generally requires folding down the rear seats to match the space of a sedan. However, hatchbacks have some advantages when transporting items taller than they are wide, as the height of objects accommodated with the rear seats folded down is much greater than what the trunk can hold. Body weight differences: Due to the lack of a trunk, hatchbacks are much lighter in body weight, resulting in slightly better fuel efficiency compared to sedans.

[Melissa]

I've driven the Buick Regal for quite a long time, and before purchasing it, I specifically consulted friends who know about cars. It basically uses four-cylinder engines, with the common 1.5T and 2.0T displacements on the market all being four-cylinder. Some might have heard that certain Buick models used three-cylinder engines, like the economical Excelle, but the Regal, as a mid-size sedan, prioritizes smoothness and stability in its powertrain. My own 2.0T version has been running for over three years, and the power delivery during acceleration is particularly linear, without the vibration typical of three-cylinder engines. Although I haven't driven all model years, at least the new models from 2020 onwards are all four-cylinder, so you can rest assured about that. Nowadays, some cars on the market force three-cylinder engines for fuel efficiency, which really affects driving quality, but the Regal does well in this regard.

[VonMatthew]

Speaking of the Regal's engine, I specifically confirmed it when accompanying a friend to check out the car last week. The salesperson clearly stated that the entire lineup uses four-cylinder engines. Even the 1.5T model, despite its smaller displacement, still has four cylinders. I've studied its engine parameters - the maximum torque kicks in around 2000 rpm, a characteristic that's hard to achieve with three-cylinder engines. After the 2019 facelift, Buick standardized the Regal's engine layout to four cylinders. Earlier models might have had hybrid versions with a 1.8L four-cylinder plus electric motor. Currently, three-cylinder engines are mainly used in entry-level models like the Verano. It's unlikely for a car positioned like the Regal to use one. If you come across a suspiciously cheap three-cylinder Regal in the used car market, it's probably either a rebuilt vehicle or incorrect information.

[SanMiles]

The Buick Regal, as a model in its class, doesn't need a three-cylinder engine. The mainstream 1.5T and 2.0T options are all inline-four cylinders. Three-cylinder engines are commonly found in compact cars, as their power output and vibration control aren't suitable for B-segment vehicles. I've researched GM's LSY engine specifications, and its technical advantage lies in variable cylinder technology rather than reducing the number of cylinders. In fact, some European automakers pushed three-cylinder engines a few years ago, but market response was mediocre. Regal customers place more emphasis on driving and riding quality, where four-cylinder engines offer significantly better structural stability and NVH (Noise, Vibration, Harshness) performance in the engine bay. The new 652T model now features a 2.0T variable cylinder engine that automatically switches to two-cylinder mode at stoplights, which is much smarter than simply reducing the number of cylinders.

[MacLydia]

When I first got my driver's license, I researched the Regal's configurations, and it's definitely a four-cylinder. Its engine codes LFV and LSY both indicate a four-cylinder structure. Anyone who has disassembled a car knows that a three-cylinder engine's block arrangement is distinguishable with the naked eye. A common misconception is that the hybrid version might differ, but the Regal hybrid actually uses a 1.8L four-cylinder engine paired with an electric motor. GM learned its lesson with three-cylinder layouts—previously, the Excelle's switch to a three-cylinder caused a sales drop. Using a three-cylinder in a midsize car is more trouble than it's worth, as the cost savings are minimal and it reduces the product's appeal. Be cautious, as some car reviewers mistakenly refer to mild hybrid systems as three-cylinder setups—the Regal's 48V mild hybrid also works in conjunction with a four-cylinder engine. If you're really concerned, you can call Buick's 400 hotline to check the specific VIN.

[AlinaMarie]

As an owner who has driven two generations of the Regal, I can confirm that the current models on sale all come with four-cylinder engines. The car was designed as a sports sedan, and fitting a three-cylinder engine in the engine bay would not only result in insufficient power but also an unbalanced weight distribution. GM's engine strategy for the Regal is clear: use four-cylinder engines to ensure power reserves, while leaving fuel consumption control to variable valve timing and cylinder deactivation technology. Here's a lesser-known fact: the North American Regal GS uses a 3.6L V6, further validating its powertrain positioning. I would advise avoiding pre-2015 models, as the 2.4L direct-injection engines from that era had a common issue with oil pan leaks, but at least they were proper four-cylinders.