Is a 2.4-Liter Engine a Good Motor?

Yes—often a very good motor—but it depends on the specific design, whether it’s naturally aspirated or turbocharged, and how you plan to use it. In today’s market, 2.4-liter engines range from simple, durable workhorses to advanced turbocharged units that can replace larger V6s, so the “goodness” comes down to execution and maintenance.

What “2.4 liters” Really Means

“2.4 liters” refers to the total displacement of all cylinders, not a guarantee of power, efficiency, or reliability. Two 2.4L engines can behave very differently depending on whether they’re naturally aspirated or turbocharged, use direct or port injection, and how their software and transmissions are tuned. Modern 2.4L engines appear in compact and midsize cars, crossovers, and even light trucks.

Strengths of 2.4L Engines Today

Many manufacturers have optimized 2.4L engines for an attractive mix of performance, efficiency, and packaging. The following points summarize common advantages buyers see in this displacement class.

• Balanced size: Enough displacement for everyday drivability without the weight and thirst of larger engines.
• Power options: Naturally aspirated versions often produce roughly 150–190 hp; turbocharged variants can deliver 240–280+ hp with strong mid-range torque.
• Efficiency potential: When geared properly, 2.4L engines can return solid fuel economy in sedans and crossovers.
• Packaging and weight: Smaller, lighter than many V6s, helping handling and front-end weight balance.
• Cost/value: Typically less expensive to build and service than larger multi-cylinder engines.
• Towing and load capability (turbo): Modern 2.4T crossovers and midsize trucks often match or exceed older V6 tow ratings.
• Simplicity (NA versions): Fewer parts than turbos, which can aid long-term reliability when maintained.

These strengths make 2.4L engines a flexible choice for commuters, families, and light-duty utility users—especially when the engine and transmission are well matched.

Potential Drawbacks and Trade-offs

Not all 2.4L engines are created equal. Design choices and execution can introduce compromises, particularly in certain generations or brands.

• Noise, vibration, harshness (NVH): Four-cylinders can feel coarser than V6s, particularly under heavy load or with CVTs.
• Turbo complexity: Turbocharged 2.4s add heat, parts, and cost; they require consistent oil and coolant maintenance.
• Direct-injection deposits: GDI-only designs may develop intake valve carbon buildup over time; dual-injection systems mitigate this.
• Known problem children: Some 2.4s have track records of issues—e.g., FCA/Stellantis 2.4 “Tigershark” oil consumption, Hyundai/Kia 2.4 GDI Theta II engine failure recalls, and oil-consumption/chain-tension concerns on certain GM 2.4 Ecotecs.
• Fuel requirements: Some turbo 2.4s recommend or require premium fuel to hit rated performance.

These risks are engine- and generation-specific, so it’s important to research the exact engine code and model year you’re considering.

Typical Performance and Economy Ranges

Outputs vary by design and tune, but these broad ranges reflect what shoppers will commonly encounter in recent models.

• Naturally aspirated 2.4L: About 150–190 hp and 160–180 lb-ft; combined fuel economy typically mid-20s to low-30s mpg in sedans/crossovers.
• Turbocharged 2.4L: About 240–280+ hp and 250–320 lb-ft; combined fuel economy often low- to mid-20s mpg in crossovers and trucks, higher in lighter cars.

Real-world results depend on vehicle weight, aerodynamics, gearing, and driving style, so test drives and owner reports remain valuable.

Recent Real-World Examples

To illustrate the range, here are current and recent 2.4L engines with different goals and outcomes.

• Toyota 2.4L turbo (T24A-FTS): Powers 2023–2025 Highlander and 2024–2025 Tacoma in various tunes; roughly 265–278 hp and strong torque, replacing older V6s and enabling up to 5,000-lb tow ratings in some trims.
• Subaru 2.4L turbo (FA24): Found in Ascent (about 260 hp), Outback XT/Onyx and WRX (around 271 hp), balancing torque-rich drivability with all-wheel-drive packaging.
• Lexus 2.4L turbo: In models like the NX 350, tuned for refinement and midrange punch in a premium crossover.
• Honda 2.4L NA (K24 family, earlier generations): Known for durability and smoothness when maintained; widely praised in older Accords/CR‑Vs.
• GM 2.4L Ecotec (various codes): Capable and efficient but some iterations had oil use or timing-chain-tension issues; maintenance and updates matter.
• FCA/Stellantis 2.4L “Tigershark”: Adequate performance but documented oil-consumption problems led to service actions; careful shopping advised.
• Hyundai/Kia 2.4L GDI (Theta II): Subject to major recalls for potential engine failure; verify recall completion and engine condition on used buys.

These examples show that the badge and engine code matter more than displacement alone—some 2.4s are excellent, others are ones to avoid used without documentation.

Buying or Owning: A Practical Checklist

If you’re considering a vehicle with a 2.4L engine, use this checklist to reduce risk and find the right fit.

1. Identify the exact engine code and whether it’s naturally aspirated or turbocharged.
2. Research known issues for that engine and model year; check for recalls and technical service bulletins.
3. Review maintenance records, especially oil-change intervals (shorter is safer for turbos).
4. Confirm fuel requirements; plan for premium if recommended on some turbos.
5. Inspect for oil consumption, leaks, and cooling system health; consider a pre-purchase inspection.
6. Ask about carbon-cleaning history on GDI-only engines; dual-injection designs are less prone.
7. Match the engine to your use: commuting, towing, mountain driving, or heavy loads may favor a 2.4T.
8. Test drive for NVH and transmission behavior (shift logic or CVT feel can change the experience).
9. Verify towing and payload ratings if you plan to haul; don’t assume all 2.4s are equal.

A careful, engine-specific approach will tell you far more than the displacement figure alone.

Who Is a 2.4L Engine Good For?

Depending on the tune and vehicle, a 2.4L powertrain can serve several buyer profiles well.

• Reliability-focused commuters: Older, naturally aspirated 2.4Ls (well-maintained) can be long-lived and economical.
• Families and adventure drivers: Modern 2.4 turbos in crossovers and trucks deliver strong torque for hills, passing, and moderate towing.
• Enthusiasts on a budget: Turbo 2.4s like Subaru’s FA24 offer upgrade paths and engaging performance from the factory.
• Value shoppers: A 2.4L can deliver V6-like usability with lower purchase and running costs, depending on model.

If your priorities are smoothness and quiet above all else, a refined V6 or hybrid may still suit you better.

Summary

A 2.4-liter engine can absolutely be a good motor. In naturally aspirated form, it often shines for simplicity and longevity; in turbocharged form, it can rival or replace older V6s with better torque and comparable efficiency. Because reliability and driving character vary widely by manufacturer and engine family, focus on the specific engine code, its known history, maintenance records, and how well it matches your needs. When you do, a 2.4L can be one of the smartest powertrain choices on the market today.

How good is a 2.4 liter engine?

A 2.4-liter engine can be “good” as it offers a reliable balance of power and efficiency, but its quality depends on the specific engine design and whether it’s turbocharged. Many 2.4L engines, like some from Toyota and Subaru, are known for dependable performance and durability. However, modern turbocharged 2.4L engines, while powerful, are more complex and may have more potential points of failure compared to naturally aspirated engines.
 
Factors that make a 2.4L engine good:

• Reliability: Many 2.4L engines are known for being long-lasting and dependable with proper maintenance. 
• Efficiency: A 2.4L engine offers a good balance between power and fuel economy, making it a suitable choice for many drivers. 
• Smoothness: The Subaru 2.4L engine is known for being smooth, while the Toyota 2.4L Turbo is also described as smooth and offering good acceleration. 

Factors that can impact performance:

• Turbocharging: A turbocharged 2.4L engine offers significant power and torque, especially at lower RPMs, which is ideal for heavy vehicles. However, turbocharged engines are more complex, increasing potential points of failure. 
• Naturally Aspirated vs. Turbocharged: Older, naturally aspirated 2.4L engines, such as those in some Chrysler Sebrings, might have simpler designs and fewer maintenance concerns than modern turbocharged counterparts. 
• Vehicle Application: A 2.4L engine can be excellent in a car for daily driving, but might feel underpowered in larger vehicles, particularly under heavy loads or at high altitudes. 

Potential Concerns:

• Complexity: Turbocharged 2.4L engines have more intricate parts, like high-pressure fuel systems and water/oil-cooled turbochargers, which can add to complexity and potential issues. 
• Maintenance: While many 2.4L engines are easy to work on, some modern designs with complex fueling systems can make certain maintenance tasks more challenging, according to YouTube reviewers of the Toyota Tacoma 2.4L. 

Is the i force 2.4 l 4 cyl turbo engine a good engine?

The i-FORCE 2.4L 4-cylinder turbo engine in the fourth-generation Toyota Tacoma is praised for its significant torque increase, low-end power delivery, smooth 8-speed transmission, and improved fuel efficiency compared to the previous V6. While early reviews highlight strong performance for daily driving and some low-end turbo lag, the long-term reliability is still an unknown, as with any new engine design. 
Key Aspects & Performance

• Torque Focus: The engine delivers impressive low-end torque, reaching peak power at a low 1,700 RPM, which is beneficial for city driving, trailer pulling, and off-road performance. 
• Power Output: The standard engine produces 278 horsepower and 317 lb-ft of torque, a notable increase from the prior generation. 
• Smooth Drivability: The integration with the Aisin 8-speed automatic transmission provides smooth and responsive shifting, contributing to a refined driving experience. 
• Fuel Efficiency: The engine is designed for improved fuel economy and reduced emissions, with features like a long stroke, thin piston rings, variable displacement oil pump, and low-viscosity oil. 
• Performance Tuning: The tuning prioritizes low-end power, which makes the acceleration feel lively in everyday situations but can make full-throttle acceleration less immediate compared to winding out the previous V6. 

Reliability & Longevity 

• New Technology: While the engine uses a combination of direct and port injection (D4ST), similar to other Toyota applications, its long-term reliability compared to the older V6 is a primary concern for buyers.
• Engineering Focus: Toyota’s focus on fuel efficiency, reduced emissions, and a lightweight design may have led to trade-offs in terms of durability, but the engine is used in other Toyota and Lexus models, which suggests a focus on overall reliability.
• Maintenance: The direct injection system’s components, particularly the high-pressure fuel injectors, may complicate future maintenance, such as valve cover removal.

Driving Experience

• Quiet and Smooth: The engine is surprisingly quiet and smooth for a four-cylinder, offering a more refined experience than previous models. 
• Responsive Acceleration: Despite a slight potential for turbo lag, the engine offers quick throttle response and feels more agile and lively, especially in the mid-range and at lower speeds. 

How long will a 2.4 L engine last?

Subaru’s 2.4-liter turbocharged engine has been known to last over 150,000 miles with routine maintenance. All of the issues mentioned here can be avoided entirely with proper care.

What is the most reliable 4-cylinder engine?

There is no single “most reliable” 4-cylinder engine, but consistently highly-regarded engines include Honda’s K-Series (K20, K24), known for its bulletproof design and high longevity, and Toyota’s 22RE (2.4L) and Dynamic Force (2.0L, 2.5L) engines, noted for their durability and straightforward design. The older Volvo B230 (“Red Block”) is another legendary option for its exceptional dependability, while the Honda K20C1 stands out as a highly reliable turbocharged 4-cylinder.
 
Highly Reliable 4-Cylinder Engines 

• Honda K-Series (K20, K24): Opens in new tabThese naturally aspirated engines are celebrated for their lightweight aluminum construction, integrated bed plate for rigidity, and timing chain for durability. 
• Toyota 22RE: Opens in new tabA 2.4-liter engine with a cast-iron block and aluminum heads, featuring a durable timing chain for excellent reliability and smooth operation. 
• Toyota Dynamic Force (2.0L, 2.5L): Opens in new tabModern, naturally aspirated engines found in models like the Corolla and RAV4, these are known for their reliability and minimal issues with proper maintenance. 
• Volvo B230 “Red Block”: Opens in new tabA robust and timeless engine from the 1980s and 90s, designed for exceptional long-term durability with basic maintenance. 
• Honda K20C1: Opens in new tabA turbocharged version of the K-Series, this engine combines high-performance thrills with the same dependable reliability Honda is known for. 

Key Factors for Reliability

• Timing Chain vs. Belt: Engines with timing chains are generally more reliable because the chain is designed to last the life of the engine, unlike rubber timing belts that require periodic replacement. 
• Robust Construction: A solid, well-engineered engine block, whether cast-iron or advanced aluminum alloys, contributes significantly to a long lifespan. 
• Proven Design: Engines with a long history of use, like the Honda K-Series and Toyota 22RE, have had time to work out any potential issues and are well-sorted.