Is the Honda 2.4 a 4-cylinder engine?

Yes. Honda’s 2.4-liter engine is a four-cylinder inline (I-4) powerplant, best known as the K24 family and, later, the Earth Dreams K24W. Used widely from the early 2000s through the late 2010s, it powered popular models like the Accord, CR‑V, Civic Si, Element, and several Acura vehicles. The engine is celebrated for its balance of efficiency, durability, and accessible performance, with outputs typically ranging from the mid‑150s to just over 200 horsepower depending on the variant.

What the 2.4-liter Honda engine is

The 2.4-liter designation refers to an approximately 2,354 cc inline-four gasoline engine. In most applications, it’s a dual-overhead-cam (DOHC) design with Honda’s i-VTEC variable valve timing. Early and mid-generation versions use port fuel injection; later “Earth Dreams” versions adopted direct injection for improved efficiency and torque. All mainstream 2.4L variants use a timing chain (not a belt) and are engineered for long service life with regular maintenance.

Key specs at a glance

The following points summarize the defining technical characteristics and performance ranges most buyers and owners care about.

• Configuration: Inline-4 (I-4), aluminum block and head
• Displacement: ~2,354 cc (2.4 liters)
• Bore x stroke: 87 mm x 99 mm (undersquare, torque-focused)
• Valvetrain: DOHC with i-VTEC
• Fuel system: Port injection (K24A/K24Z); Direct injection on Earth Dreams K24W
• Induction: Naturally aspirated
• Timing: Chain-driven cams
• Output range (approx.): 160–206 hp; 160–182 lb-ft, depending on tuning and model
• Compression ratio (typical range): ~9.7:1 to ~11.1:1 (higher on performance/DI variants)
• Fuel: Regular unleaded for most trims; premium recommended for some performance tunes (e.g., Acura TSX, Civic Si) for best results

Taken together, these specs explain why the 2.4L is widely regarded as a flexible, dependable engine that scales from economy-focused trims to enthusiast-oriented models.

Where you’ll find Honda’s 2.4L

Honda deployed the 2.4-liter four across a broad lineup in North America and other markets. The list below highlights the most common models and approximate years.

• Honda Accord: 2003–2012 (K24A/K24Z, 160–190 hp); 2013–2017 (K24W Earth Dreams, 185–189 hp)
• Honda CR‑V: 2002–2014 (K24 variants, ~160–185 hp); 2015–2016 (K24W Earth Dreams, ~185 hp)
• Honda Civic Si: 2012–2015 (K24Z7, ~201–205 hp)
• Honda Element: 2003–2011 (K24A variants, ~160–166 hp)
• Acura TSX: 2004–2008 (K24A2, ~200–205 hp); 2009–2014 (K24Z3, ~200–201 hp)
• Acura ILX: 2013–2015 (K24Z7, ~201 hp, manual); 2016–2022 (K24W Earth Dreams, ~201 hp, 8‑speed DCT)

Exact power ratings and engine codes can vary by model year and market, but these are the core applications most shoppers and owners will encounter.

Notable variants and what sets them apart

Several K24 subfamilies delivered distinct personalities, from smooth commuter duty to higher-revving enthusiast specs.

• K24A1/A4/A8: Bread-and-butter Accord/CR‑V/Element engines emphasizing reliability and low/midrange torque (roughly 160–166 hp)
• K24A2: Performance-leaning Acura TSX tune with higher compression, different cams, and freer breathing (about 200–205 hp)
• K24Z-series: Updated emissions/efficiency with outputs commonly in the 177–201 hp range; performance K24Z7 powered the 2012–2015 Civic Si
• K24W (Earth Dreams): Direct injection, friction reduction, and broader torque curve; ~185 hp in Accord/CR‑V, ~201 hp in Acura ILX

While all are 2.4L inline-fours, the calibrations and hardware differences lead to noticeably different driving characters and fuel economy profiles.

Reliability and maintenance insights

Honda’s 2.4L engines have strong durability reputations when maintained properly. Owners and technicians commonly point to the following considerations.

• Oil changes: Regular intervals are critical; neglected service can accelerate timing-chain wear and VTC (Variable Timing Control) actuator issues
• VTC actuator rattle: Brief cold-start rattle can occur on some K24A/K24Z units; often harmless but replaceable if persistent
• Direct-injection care (K24W): Occasional intake-valve cleaning may be needed over high mileage due to DI-related carbon buildup
• PCV and minor leaks: PCV valve maintenance and attention to gasket/seal seepage help keep consumption and drips in check
• Fuel quality: Premium recommended for certain higher-output variants (TSX, Civic Si) to maintain performance and reduce knock

With routine maintenance, many K24 engines surpass 200,000 miles with minimal major repairs, contributing to their strong resale and enthusiast followings.

Bottom line

The Honda 2.4 is indeed a four-cylinder engine—an inline-four that blends everyday usability with proven longevity. Whether in an Accord commuter, a CR‑V family hauler, or a Civic Si or Acura TSX tuned for fun, the 2.4L has earned its reputation as one of Honda’s most versatile modern engines.

Summary

Honda’s 2.4-liter is a four-cylinder inline engine, widely known as the K24 (and later K24W Earth Dreams). It powered numerous Honda and Acura models from the early 2000s into the late 2010s/early 2020s, delivering 160–206 hp depending on tune. Hallmarks include a DOHC i‑VTEC layout, timing chain, and strong reliability when serviced on schedule.

How long does 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.

How many cylinders is a 2.4 L Honda engine?

four-cylinder
This 2.4-liter four-cylinder gasoline engine debuted in the 2001 Honda CRV and it was the K24A1 version.

Is a 2.4 a 6 cylinder or 4 cylinder?

A 2.4-liter (2.4L) engine can be either a 4-cylinder or a 6-cylinder engine, as the “2.4L” refers to the engine’s total displacement (volume), not the number of cylinders it has. While 4-cylinder engines frequently have displacements in the 1.5–2.5 liter range, some 6-cylinder engines are also designed to be small and fall into this displacement category, like the original Nissan 240Z’s 2.4L inline-6. 
How to tell the difference:

• Check the vehicle’s owner’s manual: This is the most straightforward way to find out. 
• Look under the hood for the nomenclature: The engine compartment may have a label stating the cylinder count. 
• Use a VIN decoder: A VIN (Vehicle Identification Number) decoder online can provide the exact specifications of your vehicle, including engine type. 
• Count the spark plugs: If it’s a gasoline engine, you can typically count the number of spark plugs. 

How reliable is the Honda 2.4 L engine?

The Honda Accord consistently ranks as one of the most dependable sedans in the U.S. With proper care, Accords often exceed 300,000 miles without major drivetrain repairs. Why it lasts: Proven engine reliability (notably the 2.4L i-VTEC and 3.5L V6) Low-cost, long-lasting CVT and 5-speed automatic options.