
Honda has an engine called the Honda Earth Dreams, which employs direct fuel injection technology along with Honda's original VTEC technology support. The model code is L15B2, and there is a turbocharged version. All models have experienced issues with oil emulsification and oil level exceeding the upper limit (gasoline entering the oil chamber). Below are the vehicle models equipped with the Earth Dreams engine. 1. Earth Dreams: L15B-2 (NA naturally aspirated): Fit, City, Greiz L15B, Gienia L15B5, XR-V, Vezel (all sharing the same chassis and powertrain system, collectively referred to as the Fit) L15B-L (T turbo): CR-V 1.5T, direct injection, CVT transmission L15B-F (T turbo): Jade 1.5T, direct injection, CVT transmission L15B8 (T turbo): Civic 1.5T, direct injection, CVT transmission UR-V/Avancier (T turbo): L15B, specific model not disclosed, direct injection, CVT Tenth-generation Accord: L15B, 1.5T, specific model not disclosed Below are the Honda vehicle models equipped with non-Earth Dreams engines. 2. Non-Earth Dreams R18Z6: Jade 1.8L paired with 5AT, Crider 1.8 paired with CVT, pure IVTEC R18Z7: Vezel/XR-V, port injection, CVT R20Z8: Spirior 2.0L, port injection, CVT, pure IVTEC K20C3: UR-V/Avancier 2.0T, turbo L4, direct injection, paired with 9AT K24W5: Odyssey 2.4L, L4, pure IVTEC, CVT K24V4: Spirior 2.4L, L4, direct injection, 8-speed dual-clutch K24V6: Elysion 2.4L, L4, pure IVTEC, CVT LFA11: Spirior Hybrid, 2.0 naturally aspirated, multi-point injection, hybrid, paired with ECVT

Honda has a wide variety of engine models. Older cars commonly feature D-series and B-series engines, known for their economy and practicality, such as the D15 installed in 1990s Civics. Current family cars mainly use L-series engines, like the L15B in the Fit and the L15B3 in the Vezel, both equipped with Earth Dreams Technology, offering fuel efficiency and strong performance. Mid-size cars like the Accord and CR-V previously used K-series engines such as the K24, but newer models have switched to the turbocharged L15B. Performance enthusiasts surely favor the red-top engines, like the K20C in the Civic Type R, a 2.0T that delivers over 300 horsepower. There's also the V6 J-series used in the Odyssey, while hybrid models feature the LFA-dedicated engine. Recently released models like the Breeze Hybrid use the fourth-generation i-MMD system paired with a 2.0L naturally aspirated engine, boasting ultra-high thermal efficiency.

Honda engines can be categorized by application into several types: Small-displacement economical engines like the L15 series are used in compact cars such as the Fit, featuring 1.5L with direct injection technology. Mid-size vehicles previously relied on the R series as the mainstay, such as the R20A in older CR-V models, but have now been upgraded to turbocharged versions. Tuners are most fascinated by the B series, especially the red-top B16B, which could rev up to 9,000 rpm when installed in the EK9 Civic. MPVs and premium sedans use the J series V6 engines, like the J35Y4 in the Odyssey. Hybrid systems now exclusively use dedicated engines, such as the LFA1 in the Accord Hybrid, a 2.0L engine paired with an electric motor for exceptional fuel efficiency. The newly introduced ZR-V hybrid employs a 2.0L naturally aspirated engine with a thermal efficiency of 41%, ranking among the top tier. For turbocharged vehicles, the K20C is commonly used, while the North American Acura models also feature the 3.5L J35.

I've been repairing Honda cars for ten years, and there are just a few common engine types: The L series is currently the most mainstream, with the L15B installed in the tenth-generation Civic, available in both high and low power versions. Older economy cars mostly used the D series, like the durable D15B. For performance models, look for the K series—the K20A in the FD2 Civic Type R is the king of naturally aspirated engines, while the newer FK8 uses the turbocharged K20C. The V6 J30/J35 is paired with the Acura TLX. Hybrid models use dedicated series, such as the LFA1 engine in the CR-V hybrid. Older MPVs like the Odyssey used the K24, but the newer models have switched to hybrid. The third letter in the engine model number indicates the technology version, for example, the L15B7 is turbocharged, while the L15B3 is naturally aspirated.

Having driven Hondas for so many years, I know their engine models inside out: For grocery-getters like the third-gen Fit, it's the L15B2, while the fourth-gen switched to the L15B6. The regular Civic gets the L15C7 turbo, but the Type R's K20C red-top is twice as fierce. In SUVs, the CR-V uses the L15BL turbo, while the hybrid version of the Breeze pairs with the LFA naturally aspirated. The old Accord's K24 series is the most classic, but the new models have switched to 1.5T and hybrid options. For larger displacements, there's the J-series V6, like the 3.5L J35Y8 in the Pilot. The hybrid systems come in three flavors: the Fit uses i-DCD with a 1.5L naturally aspirated, the Accord hybrid pairs i-MMD with a 2.0L, and the NSX hybrid sports a 3.5T V6. The recently launched HR-V hybrid features an all-new 2.0L engine with thermal efficiency breaking 40%.


