Is Toyota’s i-FORCE 2.4L Turbo Four-Cylinder a Good Engine?

Yes—Toyota’s i-FORCE 2.4-liter turbocharged four-cylinder (engine code T24A-FTS) is broadly a strong, efficient, and modern powerplant with good real-world torque and a growing record of solid reliability across multiple Toyota and Lexus models. It’s not as inherently silky as an old-school V6 and some early-production vehicles saw minor drivability quirks, but overall performance, efficiency, and Toyota’s engineering choices make it a compelling engine for daily use, towing within class, and light off-road duty.

What Engine We’re Talking About

The i-FORCE 2.4L turbo is Toyota’s latest-generation inline-four that has steadily replaced larger naturally aspirated engines across the lineup. Branded “i-FORCE” in trucks and SUVs (Tacoma, 4Runner) and simply “2.4L Turbo” in crossovers and luxury models, it pairs a single-scroll turbo with dual-injection (port and direct), variable valve timing, and a water-cooled intercooler. Depending on application and tune, output ranges roughly from 228 hp/243 lb-ft (entry Tacoma) to 278 hp/317 lb-ft (Tacoma/4Runner), and about 265–275 hp with 310–317 lb-ft in Highlander, RX350, and NX350. A hybridized version (i-FORCE MAX) couples the same 2.4T with an electric motor for significantly higher system torque.

Strengths That Stand Out

The engine’s appeal rests on a mix of engineering decisions aimed at usable torque, efficiency, and durability typical of Toyota’s conservative approach to forced induction. Here are the highlights owners and testers consistently cite.

• Strong low- and mid-range torque: Delivers confident acceleration, towing, and hill climbs without high revs.
• Efficiency and emissions: Real-world fuel economy is often better than outgoing V6s in similar vehicles, with lower CO2 and NOx.
• Dual-injection design (port + direct): Helps curb carbon buildup on intake valves and smooths low-load operation.
• Thermal management: Integrated exhaust manifold and water-cooled charge air help warm-up, drivability, and knock resistance.
• Broad adoption and tuning range: Used across Tacoma, 4Runner (2025+), Highlander, Lexus NX350/RX350, which bodes well for parts availability and support.
• Hybrid upgrade path: The i-FORCE MAX variant adds notably more torque while maintaining towing capability and improving efficiency.

Taken together, these strengths make the 2.4T feel more muscular than its displacement suggests, particularly in everyday driving where accessible torque matters more than peak horsepower.

Limitations and Owner-Reported Concerns

No modern turbo four is perfect, and the i-FORCE 2.4 is no exception. Feedback from owners and early road tests highlights a few trade-offs and early-model quirks to keep in mind.

• Not V6-smooth: Some additional vibration, induction noise, or turbo whistle under load compared with a naturally aspirated six.
• Turbo character: Mild lag and occasional wastegate/boost-control noises can be noticeable but are typically normal.
• First-year teething: Early vehicles (e.g., initial 2024 Tacoma builds) saw drivability calibrations and minor NVH concerns addressed via TSBs/software updates; major systemic failures have not been widely documented.
• Fuel sensitivity for peak output: Runs on regular, but premium unleaded is recommended in some applications to achieve rated power/torque.
• Real-world mpg varies: Heavier trims, off-road tires, roof racks, and short trips can erode the efficiency edge.
• Heat management under load: As with most turbo engines, prolonged towing or high-heat use benefits from careful cool-down and diligent maintenance.

For most owners, these are nuances rather than deal-breakers, but they’re worth factoring into expectations—especially if you’re coming from a naturally aspirated V6.

Reliability Outlook and Service Considerations

Across Toyota and Lexus models using the 2.4T through late 2024, there have not been widespread, engine-specific failure trends. Toyota has issued service bulletins for drivability refinement and noise characteristics in select applications, which is common with new powertrains. The architecture’s dual-injection and conservative boost strategy are positives for longevity. As with any turbo engine, adherence to maintenance, quality oil, and sensible operating habits matter. Toyota’s typical 5-year/60,000-mile powertrain warranty applies in the U.S., with hybrid components often covered longer.

Maintenance Tips That Pay Off

Proper care goes a long way toward preserving performance and reliability in a turbocharged engine. The following practices are widely recommended and align with Toyota’s guidance and general best practices for forced induction powertrains.

• Oil changes on time (or early): Use the specified full-synthetic grade and consider shorter intervals if you tow, off-road, idle often, or drive short trips.
• Cool-down habits: After steep climbs, towing, or high-load runs, drive gently for a minute or two before shutoff to help stabilize temps.
• Air filter and intercooler care: Keep the intake tract clean and ensure unobstructed airflow; replace filters per schedule or sooner in dusty use.
• Spark plugs and fuel quality: Replace plugs per the vehicle schedule; using higher-octane fuel where recommended can sustain performance under load.
• Software updates: Ask the dealer to apply any ECU/TCM updates that address drivability or NVH refinements.
• Warm-up sensibly: Avoid hard throttle when oil is cold; this reduces wear on turbo and valvetrain components.

These steps are simple, inexpensive, and effective—especially for owners who tow, haul, or regularly encounter extreme temperatures.

How It Compares to Rivals

Against other modern turbo fours in midsize trucks and SUVs—such as Ford’s 2.3 EcoBoost and GM’s 2.7 Turbo—the Toyota 2.4T emphasizes durability-minded engineering over headline-grabbing peak output. GM’s 2.7 often posts higher peak numbers, but Toyota’s dual-injection and conservative boost targets favor smoothness, emissions, and deposit control. In real-world use, the i-FORCE’s torque delivery and calibration feel well matched to its 8-speed automatic and vehicle gearing, while the hybrid i-FORCE MAX variant stands out for class-leading low-end shove.

Verdict

For most shoppers, the i-FORCE 2.4L turbo is a good engine: punchy where it counts, efficient for its capability, and backed by Toyota’s careful, iterative approach to powertrain development. If you prize the creamy character of a naturally aspirated V6 above all else, you may miss that refinement; otherwise, the 2.4T—and especially its hybridized i-FORCE MAX form—hits a sweet spot of performance, efficiency, and day-to-day usability.

Summary

Toyota’s i-FORCE 2.4L turbo four delivers strong torque, respectable efficiency, and a growing record of reliability across multiple models, with only modest trade-offs in sound and smoothness versus a V6. Early software/NVH tweaks aside, it’s a well-executed modern engine that rewards owners who follow straightforward turbo maintenance and, where recommended, use higher-octane fuel to unlock its best performance.

Is the 2.4 L 4 cylinder a good engine?

A 2.4L 4-cylinder engine can be a good choice, offering a balance of power and efficiency, but its “goodness” depends on the specific engine and vehicle. While generally offering better fuel economy than larger engines, and often providing good low-end torque, some modern turbocharged versions may have uncertain long-term durability compared to older, simpler designs. Specific engine designs within this category, like Toyota’s i-FORCE engine, are known for strong initial power delivery and efficiency, but also have some documented issues such as oil consumption and potential transmission problems in some models. 
Pros of a 2.4L 4-Cylinder Engine

• Fuel Efficiency: A smaller displacement engine typically uses less fuel than a larger one. 
• Power and Torque: Modern turbocharged versions can deliver significant power and impressive low-end torque, making them feel responsive. 
• Smooth Operation: The inline-four configuration, especially with balancing shafts, can provide a smooth and refined driving experience. 

Cons of a 2.4L 4-Cylinder Engine

• Long-Term Durability: Some newer, more complex turbocharged designs are still relatively new, and their long-term durability is not yet proven in real-world conditions. 
• Specific Issues: Some models, like the Toyota 2.4L i-FORCE, have reported issues such as transmission failures. 
• Lack of High-End Power: While powerful at lower RPMs, some 2.4L engines may struggle for acceleration at higher speeds or when fully throttled. 

Key Considerations

• Engine Type: Is it naturally aspirated or turbocharged? Turbocharged engines are more complex, which can be a factor in long-term reliability. 
• Manufacturer and Model: Reliability varies significantly between manufacturers and specific engine designs. 
• Vehicle Application: A 2.4L engine might be excellent in a lighter car but could feel underpowered in a larger vehicle like a truck, though the Toyota Tacoma i-FORCE shows it can be a strong choice for that application. 
• Driving Style: If you frequently need high-speed passing power or tow heavy loads, a different engine might be a better fit. 

How long will a 4 cylinder turbo engine last?

A 4-cylinder turbo engine’s lifespan varies significantly, but with proper maintenance, it can last 150,000 to 200,000 miles or more, with some models extending to 250,000 to 300,000 miles. Key factors influencing this longevity include the quality of the initial design and materials, a strict maintenance schedule with high-quality oil, driving habits, and operating conditions.
 
You can watch this video to learn about the reliability of turbo engines: 22sCar Help CornerYouTube · Jul 20, 2022
Factors Affecting Longevity

• Maintenance: Regular, scheduled oil changes with high-quality oil are crucial for a turbo engine’s lifespan, as the turbocharger is lubricated by the engine’s oil and operates under high heat and speed. 
• Driving Habits: Driving habits can significantly impact a turbo engine’s life. Gentle driving and allowing the engine to warm up properly can extend its life, while aggressive driving puts more stress on the components. 
• Engine Design and Quality: High-quality materials, precise machining, and good initial assembly practices contribute to a longer-lasting engine. 
• Operating Conditions: Environmental factors and consistent load on the engine, such as in hot climates or mountainous terrain, can affect wear and tear. 
• Turbocharger Wear: The turbo itself is a high-speed component that experiences significant heat. Over time, this can lead to bearing failure or impeller issues. 

Tips for Maximizing Lifespan

• Follow the Maintenance Schedule: Adhere to the manufacturer’s recommended maintenance schedule, especially oil changes. 
• Use High-Quality Fluids: Always use the specified high-quality engine oil and filters. 
• Warm Up and Cool Down: Allow the engine to warm up before driving hard, and let it run for a short period after heavy use to cool the turbo. 
• Be Mindful of Driving Style: Drive moderately and avoid constant high-RPM operation, which increases stress on the engine. 

How many miles will a Toyota Tacoma 4 cylinder last?

A Toyota Tacoma 4-cylinder will last well over 200,000 miles, often reaching 300,000 miles or more with proper care and maintenance. The vehicle’s overall longevity is attributed to its durable design and the reliability of the Toyota brand, though actual mileage depends on factors like regular maintenance, driving habits, and avoiding rust.
 
Factors that contribute to a long lifespan:

• Regular oil changes and fluid checks: Consistent maintenance is key to engine longevity. 
• Scheduled maintenance: Following the manufacturer’s recommended service schedule for oil, filters, and other components ensures the truck runs smoothly. 
• Addressing issues promptly: Fixing small problems before they become major issues can prevent extensive damage. 
• Gentle driving habits: Avoiding aggressive driving, excessive towing, and hauling can significantly extend the life of the engine. 
• Body care: Keeping the underbody clean to prevent rust is crucial, especially in harsh climates. 
• Highway driving: Miles driven primarily on highways cause less wear and tear than city driving, which can contribute to a longer overall lifespan. 

Why they last so long:

• Reliability: Toyota Tacomas are consistently ranked among the most reliable and durable vehicles on the market. 
• Durable design: The 4-cylinder engine is known for its simple and robust design, which contributes to its exceptional lifespan. 
• Owner care: Many owners prioritize maintenance and take care of their trucks, resulting in them reaching or exceeding 300,000 miles. 

Is the iforce 4 cylinder a good engine?

The Tacoma comes standard with a 2.4L i-FORCE turbocharged four-cylinder engine, which allows for the ideal blend of power and efficiency, making this a great choice for many drivers.