Which Type of Car Engine Is Best? It Depends on How and Where You Drive

For most drivers who can reliably charge at home or work, a modern battery‑electric vehicle (BEV) is the best overall choice thanks to low running costs, minimal maintenance, strong performance, and the lowest lifecycle emissions in most regions. If you can’t charge regularly, a conventional hybrid (HEV) is typically the smartest pick for efficiency and simplicity. Frequent long‑distance towing or travel in remote areas where charging is scarce still favors diesel or gasoline trucks—ideally with hybrid assistance. Plug‑in hybrids (PHEVs) are compelling if you can plug in most days. Hydrogen fuel‑cell cars remain impractical for most buyers due to sparse fueling infrastructure and high fuel costs.

What “best” means in 2025

Today, “best” blends total cost of ownership, day‑to‑day convenience, performance, environmental impact, and policy realities. Energy prices vary by region and time of day; charging and fueling infrastructure quality can make or break ownership; and local rules—from clean‑air zones to incentives—shift the balance between technologies. With that context, here’s how the main engine types stack up.

The main engine types you can buy now

Battery‑electric vehicles (BEVs)

BEVs run solely on electricity. They’re the efficiency and performance leaders, with quick acceleration, quiet operation, and near‑zero maintenance beyond tires and cabin filters. Lifecycle emissions are typically lowest, even on relatively carbon‑intensive grids, and fall as grids add renewables. Trade‑offs include dependence on charging access, reduced range in very cold weather and when towing, and longer stops on road trips if fast chargers are scarce or congested. In North America, the industry is consolidating around the SAE J3400 (NACS) fast‑charging interface, improving access to high‑power chargers as networks expand.

Conventional hybrids (HEVs)

HEVs pair a gasoline engine with a small battery and electric motor but do not plug in. They excel in mixed and urban driving, delivering strong fuel economy and lower tailpipe emissions versus conventional gasoline cars without needing charging. They retain familiar refueling, are widely available, and have proven reliability. They still require engine maintenance and don’t provide meaningful electric‑only driving.

Plug‑in hybrids (PHEVs)

PHEVs offer a usable electric‑only range (often 20–60 miles/32–96 km) for daily trips, with a gasoline engine for longer journeys. They shine for commuters who can charge at home or work most days, dramatically reducing fuel use. If rarely plugged in, they can be less efficient than HEVs due to extra weight and complexity. Cargo space may be tighter than comparable HEVs/ICE vehicles due to battery packaging.

Gasoline internal‑combustion engines (ICE)

Gasoline engines remain the default worldwide. They offer ubiquitous refueling, low purchase prices on the used market, and a mature service ecosystem. Downsides include higher operating emissions, lower overall efficiency, and more routine maintenance. Some cities are tightening air‑quality rules that penalize older gasoline vehicles over time.

Diesel internal‑combustion engines (ICE)

Diesels deliver excellent highway efficiency and strong torque for towing, which is why they remain common in heavy‑duty trucks and commercial vehicles. However, modern emissions gear (DPF, SCR/AdBlue) adds cost and complexity, diesel fuel can be pricier, and many urban areas restrict older diesels due to NOx and particulate pollution. In North America and parts of Europe, diesel options for new passenger cars have dwindled.

Hydrogen fuel‑cell electric vehicles (FCEVs)

FCEVs are electric cars that make electricity onboard from compressed hydrogen. They refuel quickly and emit only water at the tailpipe. But public hydrogen fueling is extremely limited and often unreliable outside a few pockets (notably parts of California and Japan), and hydrogen prices for consumers remain high. Model choices are scarce. For most private buyers, FCEVs are not yet practical.

Which engine fits which driver?

The scenarios below match common driving patterns with the engine type that best balances cost, convenience, and environmental impact today.

• Urban/suburban drivers with home or dependable workplace charging: BEV
• Apartment/condo dwellers without reliable charging: HEV; consider a PHEV if you can plug in at least a few times per week
• Long‑distance highway commuters with limited charging along the route: HEV or an efficient gasoline car; BEV works if fast‑charging is dependable on your corridor
• Frequent heavy towing or off‑grid travel: Diesel pickup or gasoline truck (a hybridized truck can reduce fuel use and improve low‑speed torque)
• Mainly short trips in traffic: HEV or BEV; both excel in stop‑and‑go conditions
• Performance enthusiasts: BEV for instant torque and low running costs; track‑day regulars should verify thermal management and charging access, or consider performance ICE
• Cold climates: BEV with a heat pump and preconditioning, or HEV if charging is uncertain; plan range buffers for winter
• Tight purchase budget/used market: Reliable used HEV or gasoline ICE; used BEVs can be bargains if the battery health is verified and local charging is solid

These pairings aren’t absolute, but they reflect where each technology tends to deliver the best ownership experience with today’s infrastructure and prices.

Cost and emissions: what to expect in 2025

These points outline how day‑to‑day costs and environmental impacts compare for the main engine types, recognizing that local energy prices and driving patterns make a big difference.

• Energy costs: Home‑charged BEVs are typically cheapest per mile; public DC fast charging narrows or can erase that advantage on some networks. HEVs reduce fuel spend substantially versus conventional gasoline. PHEVs are cost‑effective only if plugged in regularly.
• Maintenance: BEVs avoid oil changes, timing belts, and many wear items; brake wear is lower due to regenerative braking. HEVs/PHEVs share some ICE maintenance, and diesels add emissions‑system upkeep. Tires may wear faster on heavier vehicles, including some BEVs and PHEVs.
• Emissions: BEVs usually have the lowest lifecycle emissions, which improve as grids decarbonize. HEVs cut tailpipe CO2 and local pollutants versus conventional gasoline. PHEV emissions depend heavily on how often you charge. Diesels excel on CO2 per mile at steady highway speeds but emit NOx/particulates without robust aftertreatment.
• Incentives and policy: Many regions offer tax credits or rebates for BEVs and some PHEVs, sometimes at the point of sale; eligibility varies by final assembly, battery content, price caps, and income. Clean‑air zones increasingly favor low‑ and zero‑emission vehicles.

Running costs and emissions profiles increasingly reward electrified options, with the biggest gains when you can charge predictably and drive a significant share of miles on electricity.

Charging and fueling reality check (2025)

Infrastructure quality often determines whether an engine type feels “best” in daily life. Here are key developments that shape the experience this year.

• Fast‑charging standards: In North America, most automakers are adopting the SAE J3400 (NACS) connector, expanding access to high‑power stations; adapters bridge CCS and J3400 during the transition. Europe largely standardizes on CCS2.
• Network reliability: Public fast‑charging reliability is improving but remains uneven by operator and region; trip planning apps and in‑car routing help locate working, high‑power stalls.
• Home and workplace charging: A 240‑V Level 2 charger typically adds convenient overnight range; off‑peak rates can materially cut costs. For many, this is the decisive advantage of BEVs and PHEVs.
• Hydrogen availability: Retail hydrogen stations are sparse with frequent outages in most markets; fuel prices are high, making FCEVs risky outside a few supported corridors.
• Liquid fuels: Gasoline is ubiquitous; diesel is widely available but subject to regional restrictions and, in some cities, penalties for older vehicles.

If you can plug in where you park, electrified options are easy to recommend. If you depend on public charging or hydrogen, verify real‑world station availability along your routes before buying.

Bottom line

There’s no single “best” engine for everyone. For the broadest slice of drivers with access to dependable charging, BEVs deliver the best mix of cost, performance, and emissions. Without charging, HEVs are the default smart buy. For sustained heavy towing or remote travel, diesel or gasoline—ideally with hybrid assistance—remains practical. PHEVs are excellent bridge solutions if you’ll actually plug in most days; FCEVs remain niche until fueling expands.

Summary

Best overall for most with home/work charging: BEV. Best without charging: HEV. Best for heavy towing/remote use: diesel or gasoline (hybridized if available). PHEVs work well for regular chargers who need long‑trip flexibility. Hydrogen fuel‑cell cars aren’t broadly practical yet due to infrastructure and cost. Match your choice to your charging access, driving pattern, climate, and local policies to get the best result.

Which car model has the best engine?

There is no single “best” engine, but rather engines that excel in different areas, like reliability, performance, or efficiency. Toyota and Honda are widely praised for engine reliability, with their engines, such as the Toyota 2GR-FSE V6 and Honda R-series, known for long life and dependable performance. For high performance, engines like the Honda 2.0-liter turbo in the Civic Type R and the Ford 5.2-liter supercharged V-8 are top contenders, according to sources like Road & Track. For efficiency and hybrid integration, the Toyota 2.5L hybrid system is considered one of the best.
 
You can watch this video to learn about some of the best engines in cars and their unique features: 59sExoticCar PlayPlaceYouTube · May 1, 2025
For Reliability

• Toyota/Lexus 2GR-FSE V6: Opens in new tabThis 3.5-liter V6 is known for its robustness and is used in models from both brands, including the Camry, Highlander, and Lexus IS 350. 
• Toyota 2.5L Hybrid: Opens in new tabWhen paired with a hybrid system, this engine is considered exceptionally reliable and efficient. 
• Honda R-Series: Opens in new tabThese engines have a legendary reputation for being durable and long-lasting, often found in various Honda models. 

For Performance

• Honda 2.0-liter Turbo: Opens in new tabFound in the Civic Type R, this turbocharged engine delivers significant power and torque and is exclusively available with a manual transmission, offering an exciting driving experience. 
• Ford 5.2-liter Supercharged V-8: Opens in new tabFeatured in the F-150 Raptor R, this engine is a prime example of modern American power, according to Car and Driver. 

For Efficiency 

• Toyota Hybrid Synergy Drive: The 2.5-liter hybrid system available in many Toyota and Lexus vehicles is highly regarded for its excellent fuel economy.

Key Takeaway
The “best” engine depends on your priorities. For overall long-term ownership, engines from Toyota and Honda are strong choices for their exceptional reliability and dependability. If you’re looking for high-performance thrills, consider engines like the Honda Type R or the Ford V-8. For a blend of efficiency and power, Toyota’s hybrid powertrains are excellent options.

Which engine type is best for a car?

There is no single “best” engine; “best” depends on your priorities, such as reliability, performance, or fuel efficiency. Highly-regarded engines for reliability include Toyota’s 2JZ and the 22R/RE, along with Honda’s K-Series and B-Series engines, known for their durability and ease of maintenance. For performance, legendary engines like the Toyota 2JZ-GTE, Nissan RB26DETT, and the Ferrari 3.9-litre Twin-turbo V8 are praised for their speed and engineering. Engines like the Hyundai Ioniq’s 1.6-liter hybrid system, on the other hand, are noted for their fuel efficiency. 
For Reliability

• Toyota 2JZ: Opens in new tabA robust and widely respected engine for its durability and long life, according to Carro. 
• Honda K-Series (K20/K24): Opens in new tabKnown for versatility, reliability, and upgrade potential, making them a favorite for performance and enthusiasts. 
• Toyota 22R/22RE: Opens in new tabSimple, rugged, and nearly bulletproof, these old-school Toyota motors are built to last and are easy to maintain. 
• Mercedes-Benz OM617: Opens in new tabA durable and long-lasting diesel engine known for its simple, heavy-duty components. 

For Performance

• Ferrari 3.9-litre Twin-turbo V8: This engine won the International Engine of the Year award multiple times for its outstanding performance and power. 
• Toyota 2JZ-GTE: A legendary engine praised for its reliability and performance, capable of handling significant power. 
• Nissan RB26DETT: A high-performance engine famous in the racing world for its speed and power. 
• Mercedes-AMG M139: A powerful and high-revving engine known for its impressive performance. 

For Fuel Efficiency 

• Hyundai Ioniq (1.6-liter Hybrid): This engine-hybrid system offers exceptional miles-per-gallon, making it one of the most fuel-efficient options available.

Why “Best” is Subjective

• Your Driving Needs: Opens in new tabIf you need a reliable daily driver, a Toyota or Honda engine might be best, while a performance enthusiast might look for a Ferrari or Nissan engine. 
• Maintenance: Opens in new tabSome engines, like the Toyota 22R/RE, are praised for being simple and easy to work on, reducing maintenance costs over time. 
• Longevity: Opens in new tabSome engines are built to last for hundreds of thousands of miles with minimal issues, while others are designed for peak performance. 

Which is better v4 or V6 engine?

A V6 is “better” than a four-cylinder engine for drivers prioritizing power, torque, and smoothness, especially for heavy loads or spirited driving, while a four-cylinder engine is generally “better” for fuel efficiency and cost, though modern turbocharging has made four-cylinder engines very powerful. The best choice depends on your specific needs and priorities, such as the type of vehicle, driving conditions, and budget. 
Choose a V6 if you need:

• More Power and Torque: Opens in new tabV6 engines typically offer higher horsepower and torque, providing faster acceleration and better responsiveness, especially when carrying heavy loads or in larger vehicles like SUVs and trucks. 
• Smoother and Quieter Driving: Opens in new tabThe inherent design of a V6 engine results in smoother operation and a more pleasant, less “agricultural” sound, making for a more comfortable and refined driving experience. 
• Better Towing and Hauling: Opens in new tabThe increased power and torque of a V6 make it better suited for towing heavy trailers or hauling significant cargo. 
• Less Strain on the Engine: Opens in new tabA V6 engine often operates at lower RPMs, meaning it isn’t working as hard as a smaller engine would for similar tasks, which can contribute to better longevity and reliability. 

Choose a four-cylinder if you prioritize:

• Fuel Economy: Opens in new tabFour-cylinder engines are generally more fuel-efficient, resulting in lower fuel costs compared to V6 engines. 
• Lower Purchase Cost: Opens in new tabVehicles with four-cylinder engines are often less expensive to buy than those with V6s. 
• Lighter Vehicles: Opens in new tabSmaller, compact cars are typically well-suited for four-cylinder engines, offering a good balance of performance and efficiency. 
• Modern Turbocharging: Opens in new tabAdvanced turbocharging technology has significantly boosted the output of many four-cylinder engines, allowing them to provide performance that rivals or even exceeds some naturally aspirated V6s in certain applications. 

Considerations for Both:

• Vehicle Type: Opens in new tabThe appropriate engine size often depends on the vehicle; a V6 is often necessary for the power required by larger trucks and SUVs, while smaller cars often suffice with a four-cylinder. 
• Modern Technology: Opens in new tabThe gap in performance between four-cylinder and V6 engines has narrowed significantly due to advancements like turbocharging and direct injection, so it’s important to look at specific models rather than generalizing based solely on the number of cylinders. 

Which car engine is most reliable?

There’s no single “most” reliable engine, but Toyota and Honda engines, such as the Toyota GR family and the Honda K-Series, are consistently ranked among the most durable and long-lasting, often exceeding 300,000 miles with proper maintenance. Other reliable engine examples include the legendary Mercedes OM617 diesel, the Toyota UZ V8, and the BMW N52 inline-6. Reliability is also heavily influenced by regular maintenance, which can significantly extend the life of any engine. 
Most Reliable Engine Families 

• Toyota GR / Toyota UZ/2JZ: Opens in new tabThese engine families are found in popular models like the 4Runner, Land Cruiser, and Lexus models, known for their extreme durability and ability to reach 300,000 miles or more. 
• Honda K-Series: Opens in new tabThe Honda K-Series (e.g., K20, K24) engines have a reputation for enduring high mileage with basic care and are found in popular vehicles like the Civic, CR-V, and Accord. 
• Honda J-Series: Opens in new tabThese robust V6 engines are known for lasting well over 200,000 miles and are found in models such as the Honda Pilot and Accord. 
• Mercedes OM617: Opens in new tabA classic diesel engine from the 1970s and 80s, it is renowned for its extraordinary longevity, with many examples exceeding 500,000 miles. 

Key Factors for Engine Reliability

• Regular Maintenance: Consistent oil changes and other scheduled maintenance are crucial for any engine to last as long as possible. 
• Engine Simplicity: Simpler, naturally aspirated engines tend to have fewer complex components that can fail, contributing to greater reliability. 
• Brand Reputation: Toyota and Honda have built strong reputations for reliability over decades by prioritizing durability and longevity in their engine designs. 
• Specific Engine Models: Reliability varies significantly even within a brand; certain engine series (like Toyota’s GR or Honda’s K-Series) are known for their exceptional durability. 

Other Notable Engines

• BMW N52: Opens in new tabWhile requiring proper maintenance for issues like gasket leaks, the core BMW N52 inline-6 is still considered a reliable engine. 
• Mazda Skyactiv-G: Opens in new tabMazda produces reliable four and six-cylinder engines, including the Skyactiv-G. 
• GM LS-Series: Opens in new tabThese V8 engines are known for their reliability, particularly in the US market.