--- title: "Here’s Everything You Need To Know About Hybrid Cars" description: "Learn more on how hybrid cars work. Our team of experts prepared the guide on what you need to know about the way that hybrid cars work." date: "2021-02-13" modified: "2021-02-13" authors: - name: "Jonathon Klein" job_title: "Contributor" link: "https://www.thedrive.com/authors/jonathon-klein" - name: "Rob Stumpf" job_title: "Contributor" link: "https://www.thedrive.com/authors/rob-stumpf" url: "https://www.thedrive.com/cars-101/39203/how-do-hybrid-cars-work" categories: - "Cars 101" - "The Garage" tags: - "Project Redwood" --- # Here’s Everything You Need To Know About Hybrid Cars ![]() *\www.thedrive.com\* The world is gradually coming to the understanding that, yes, humans are affecting our planet’s climate, and not for the better. Luckily, we’ve made great strides in the past two decades in reducing our carbon footprint and the pollution we spew into the oceans and atmosphere. A key part of this shift is the introduction of hybrid cars. Although they are better for the health of the planet than traditional gas-only vehicles, hybrids are essentially stopgap measures. They’re more efficient and less polluting than cars with gasoline engines, but they’re not as environmentally friendly as EVs—[*and even EVs still have issues*](). They blend the two propulsion systems to achieve their goals of reduced emissions and fuel consumption. And while hybrids like the Toyota Prius have been around for more than two decades, there’s still confusion about how they work, what types of hybrids are available, and their reliability, among other questions. Lucky for you, *The Drive’s* electrified editors are into saving the planet and ensuring our children have fresh air to breathe long after we’re gone. ![]() ## How Do Hybrids Work? **A** [**hybrid car**]() **is one that uses two types of energy sources, fuel, and electricity, to achieve the goals of** [**more efficient propulsion**]() **or** [**make cars faster**]() **compared to a traditional gasoline engine**. The most common type of hybrid vehicle blends a gasoline-powered combustion engine with one or more electric motors and a battery storage pack to achieve better fuel economy or performance compared to a vehicle with only a combustion engine. This works by the battery supplying electrical energy to driven wheels or charging the battery itself with the gasoline engine, for example: - A [Prius]() or McLaren blend electrical energy with gas. One generates power for the battery, the Prius, while the other pushes the performance envelope, the McLaren. - An [Acura NSX]() uses only electrical energy to drive the front wheels, while the gas ... Hybrids also use regenerative braking to return small amounts of electricity to their batteries. ![]() ## What Types of Hybrids Are There? Just as there are multiple types of combustion engines, there are also multiple types of hybrid powertrains. Let’s break it down into more digestible terms. ### Parallel Hybrid The most common type of hybrid is a parallel hybrid, in which both the battery-fed electric motor and gas engine have direct connections to the drive wheels through a coupling mechanism such as a transmission. These hybrids have one, two, or three electric motors, depending on the vehicle’s make and model. ### Series Hybrid A series hybrid as an electric vehicle with a gas-powered generator attached. There’s no direct connection to the drive wheels from the gas engine as it purely recharges the battery while the electric motor(s) handles the propulsion. A perfect example is the cool [BMW i3]() with a range extender. ### Plug-In Hybrid (PHEV) A plug-in hybrid is essentially a parallel hybrid with a larger battery pack that requires charging from an external source, i.e. a plug. By storing more energy, a PHEV can drive using 100 percent electric propulsion, though the amount of pure-electric range is still limited to relatively short trips around town. ### Mild Hybrid On mild hybrids, the electric components are not capable of directly driving the wheels on their own. Instead, a small battery pack and electric motor act as assistants to help improve fuel economy, slightly increase performance with bursts of torque, regenerate energy, and power accessories. One of the most common jobs for an electric motor in a mild hybrid is to double as a starter and power the start-stop technology. More capable and efficient mild hybrids with 48-volt battery packs have recently proliferated throughout the industry. ### Full Hybrid A full hybrid car has electric components that can directly drive the wheels on their own, without the gas engine. Different types of full hybrids include parallel hybrids, series hybrids, and plug-in hybrids. And if you’d like to know more about hybrid cars, how they work, and other forms of hybrids, you can check out *The Drive’s* guide to [The Advantages and Disadvantages of a Hybrid Car](). https://www.youtube.com/watch?v=UrSKcEe4u0w ## Are Hybrids Reliable? We’ve written at length about what makes a [reliable car]() and that goes for hybrid cars, too. What it really amounts to is how you take care of your car, the preventative maintenance you perform, and how you drive. ## Advantages Vs. Disadvantages of Hybrids Like everything, there are advantages and disadvantages to owning and driving a hybrid car. To better illustrate those, we worked up a whole other article on *just* the [Advantages and Disadvantages of Hybrid Cars](). ## Hybrid Terms You Should Know #### MPGe MPG, or miles per gallon, is a measurement of how many miles a vehicle can travel on one gallon of gasoline fuel. MPGe, which is used to measure the “fuel economy” of hybrid and electric vehicles, stands for miles per gallon equivalent. According to the United States Department of Energy, 33.70kWh of electricity has 100 percent of the energy of one gallon of gasoline. Thus, if a vehicle is able to run for 100 miles on 33.70 kWh, it is rated at 100 MPGe. #### Regenerative Braking Regenerative braking is the act of recovering energy through the car’s braking system. Typically, when a non-hybrid car brakes, kinetic energy is transformed into heat and released due to the friction between the brake pads and the brake. When the brake pedal is pressed on hybrid and electric vehicles, the electric motor turns into a generator, and the wheels transfer the energy from the drivetrain to the generator. The generator then turns the kinetic energy into electric energy and stores it in the battery. The generative energy torque from the generator slows the vehicle down. ![]() ## FAQs About Hybrid Cars ## Author Jonathon is the former Managing Editor for Commerce at The Drive and has been writing about cars and motorcycles for over a decade, but he's been known to scribble pretty things about adoption, tattoos, life, gear, adventures, food, technology, nature, and more. ### Author social links [Instagram]()