Is a 2.4-liter 4‑cylinder engine good?

Yes—many 2.4‑liter four‑cylinder engines are a solid, middle‑ground choice for daily driving, balancing acceptable power, fuel economy, and cost. The real answer depends on the specific engine family and vehicle: some 2.4s are exceptionally reliable, while a few have well‑documented issues you should know before buying. Also note that 2.4 liters doesn’t always mean four cylinders, though most mainstream 2.4‑liter engines are indeed inline‑fours.

What a 2.4‑liter four‑cylinder typically delivers

To understand whether a 2.4L four is “good” for your needs, it helps to know the typical power, drivability, and efficiency you can expect from this displacement in common cars and crossovers.

• Output: Naturally aspirated 2.4L engines usually make about 160–190 hp and 160–175 lb‑ft of torque; turbocharged 2.4Ls can range from roughly 228–325 hp and 258–350 lb‑ft.
• Performance: In midsize sedans and compact crossovers, 0–60 mph is often 7.5–9.5 seconds (NA) and 5.7–7.0 seconds (turbo), depending on weight and gearing.
• Fuel economy: Many NA 2.4Ls return about 22–30 mpg combined; turbo versions vary widely (roughly 22–30 mpg combined) based on tune, vehicle size, and driving style.
• Use cases: Well‑suited to commuting, family hauling in compact/midsize vehicles, and light towing; can feel taxed in heavier three‑row SUVs if naturally aspirated.
• Noise/vibration: Typically smooth enough in normal driving; can sound coarse when pushed hard compared with larger six‑cylinders.

In short, a 2.4L four often meets everyday needs comfortably; a turbocharged 2.4L can add meaningful punch while keeping weight and efficiency in check.

Pros and cons

Here’s how a 2.4‑liter four stacks up in general compared with smaller turbo engines, larger V6s, and hybrids.

Advantages

These are the common upsides owners cite when living with a 2.4‑liter four‑cylinder.

• Balanced package: Adequate power with reasonable fuel costs in mainstream sedans and crossovers.
• Lower ownership cost: Often cheaper to buy and maintain than larger six‑cylinders; many use regular 87‑octane fuel.
• Simplicity (NA versions): Fewer turbo‑related components, generally easier maintenance, and often long service life with basic care.
• Parts availability: Widely used across brands and years, making parts and service straightforward.
• Weight savings: Lighter than most V6s, which can help handling and front‑end wear.

For everyday use, these strengths make a 2.4L four a practical, budget‑friendly choice that doesn’t feel underpowered in typical driving.

Drawbacks

Potential downsides vary by engine family and how you drive.

• Under load: Naturally aspirated 2.4s may feel strained in heavier vehicles, at altitude, or when fully loaded/towing.
• Noise/harshness: More engine buzz under hard acceleration compared with smooth V6s or some larger fours.
• Known problem children exist: A few 2.4L families have documented oil‑consumption or bearing issues (details below).
• Market shift: Newer vehicles increasingly favor 2.0‑liter turbos, 2.5‑liter NA fours, or hybrids that can beat a 2.4L on both power and efficiency.
• Direct injection tradeoffs: Some DI versions face intake valve carbon buildup over time, requiring periodic cleaning.

If you need effortless acceleration in a big SUV or plan frequent towing, you may prefer a turbocharged 2.4L, a larger engine, or a hybrid.

Reliability snapshot by common 2.4L families (used market)

Reliability depends heavily on the specific engine code and model years. Here are widely encountered 2.4‑liter fours and what to watch for.

• Honda K24 (Accord, CR‑V, Element, Acura TSX/ILX): Generally excellent long‑term reliability with routine oil changes; timing chain; non‑DI versions avoid carbon buildup. Watch for age‑related oil seepage, occasional chain tensioner wear.
• Toyota 2AZ‑FE (Camry, RAV4, Scion tC/xB): Largely durable, but earlier 2002–2006 engines had head‑bolt thread issues in some cases; certain 2006–2009 units had oil‑consumption TSBs. Many still run high mileage if maintained.
• Hyundai/Kia 2.4 Theta II (especially GDI, ~2011–2019, Sonata/Santa Fe/Sportage/Optima/others): Subject to major recalls/extended warranties for bearing wear and potential engine failure; Knock Sensor Detection System updates widely applied. Verify VIN recall status and service history.
• GM 2.4 Ecotec (Equinox/Terrain/Malibu/Regal, ~2010–2017): Known for high oil consumption and possible timing chain stretch; PCV system issues in cold climates can cause rear main seal failures. Diligent oil checks are critical.
• Chrysler/Jeep/Dodge 2.4 “Tigershark” MultiAir II (Cherokee, Compass, Dart, 200, ~2013–2020): Widespread reports of excessive oil consumption; settlements/extended coverage in some cases. Confirm oil use history and keep a close eye on levels.
• Subaru FA24 turbo (Ascent, Outback/Legacy XT, WRX, 2019–present): Strong low‑end torque with decent economy; early ownership data generally positive when stock. Observe maintenance intervals and cooling/CVT service where applicable.
• Toyota/Lexus 2.4T T24A‑FTS (Highlander, Grand Highlander, Lexus NX/RX, Tacoma, 2023–present): Efficient and torquey; however, Toyota issued 2024 stop‑sales/recalls for certain units due to potential bearing damage from machining debris, remedied with engine replacement under warranty. Always run a VIN recall check.

Takeaway: There are standout 2.4s with stellar reputations and others with known issues. A targeted VIN check and service‑history review matter more than displacement alone.

When a 2.4L four makes sense—versus alternatives

Whether a 2.4L four is the right choice depends on your vehicle size, performance expectations, and budget.

• Good fit: Daily commuting, mixed city/highway driving, small families, compact/midsize sedans and crossovers, light towing.
• Consider turbo 2.4 or 2.0T: If you want stronger acceleration, tow more, or live at higher elevations.
• Consider 2.5L NA: In newer models, 2.5‑liter fours often match or exceed NA 2.4L power with similar or better economy.
• Consider hybrids: For best city mpg and smoothness, modern hybrids frequently outperform older 2.4L setups on both cost per mile and drivability.
• Consider V6: If you prioritize quiet, effortless power in bigger vehicles or frequent mountain/high‑load driving.

Matching the engine to your use case will do more for satisfaction than focusing on displacement alone.

Buying and ownership checklist

If you’re evaluating a vehicle with a 2.4‑liter four, these steps help separate the safe bets from the risky ones.

1. Identify the engine code and years: Reliability varies by family; look up known issues for that exact engine.
2. Run a VIN recall/TSB search: Check factory recalls and service campaigns (especially for Hyundai/Kia Theta II, GM Ecotec, Chrysler Tigershark, Toyota 2.4T).
3. Check oil history and consumption: Review maintenance records; during a test drive, inspect for blue smoke and check oil level before/after.
4. Listen on cold start: Knocking, ticking, or timing chain rattle can signal wear; walk away from persistent heavy knocks.
5. Inspect for carbon buildup (DI engines): Rough idle, hesitation, or misfires may suggest the need for intake valve cleaning.
6. Mind the transmission: Many 2.4s pair with CVTs or 6‑speed autos—verify smooth operation and fluid‑change history.
7. Test under load: Drive on a steep hill or highway on‑ramp with passengers/cargo to ensure performance meets your expectations.
8. Get a pre‑purchase inspection: A compression or leak‑down test and a scan for stored codes can catch expensive problems early.

A bit of homework and a thorough inspection are often the difference between a long‑lived, economical car and an ownership headache.

Summary

A 2.4‑liter four‑cylinder can be an excellent, cost‑effective engine for everyday use, offering a practical mix of power and efficiency. Reliability is highly engine‑family dependent: standouts like Honda’s K24 are proven, while others—notably some Hyundai/Kia Theta II, GM Ecotec 2.4, and Chrysler Tigershark units—require extra diligence due to known issues. If you want more punch or tow capacity, look to turbocharged 2.4Ls, newer 2.5‑liter fours, or hybrids. As always, confirm recalls, scrutinize maintenance history, and test drive thoroughly to ensure the engine suits your needs.

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. 

Is a 2.4 a 4-cylinder?

Yes, a 2.4-liter (2.4L) engine is typically a 4-cylinder engine, but this is a common convention, not a universal rule. While you’ll find many 2.4L engines in a 4-cylinder configuration, particularly in popular car models, 2.4L V6 engines do exist, though they are rare.
 
Why the Confusion?

• Displacement vs. Cylinder Count: Opens in new tabThe “2.4” refers to the engine’s displacement (the total volume of air it pumps per revolution), not the number of cylinders. 
• Engine Design Trends: Opens in new tabFour-cylinder engines often have a 1.6L to 2.4L displacement, making a 2.4L a very common configuration. 
• V6 Alternatives: Opens in new tabWhile 2.4L V6 engines exist, they are uncommon, and most automakers focus on 4-cylinder engines with this displacement. 

How to Be Sure
To confirm if a 2.4L engine is a 4-cylinder, you should:

• Check the vehicle’s specifications: Opens in new tabLook for “2.4L 4-Cylinder” or “2.4L I4” (Inline-4) in the official documentation for the vehicle. 
• Examine the engine: Opens in new tabVisually check how many spark plugs or ignition wires there are. A four-cylinder engine will have four spark plugs and wires, while a six-cylinder engine will have six. 

How powerful is a 2.4 liter engine?

For street purposes, turbo-charged, it could EASILY put out 200 hp. For race purposes, you might get it up to 400 hp or higher.

How long does a 2.4 L 4 cylinder engine last?

With proper oil changes and maintenance, a 2.4L TigerShark engine should last between 130,000 and 200,000 miles. However, the oil consumption issues and piston ring failures can severely limit the lifespan of these engines before they need significant repair or fail completely.