Honda R engine
title: "Honda R engine" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["honda-engines", "2006-introductions", "straight-four-engines", "gasoline-engines-by-model"] topic_path: "general/honda-engines" source: "https://en.wikipedia.org/wiki/Honda_R_engine" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::data[format=table title="Infobox automobile engine"]
| Field | Value |
|---|---|
| name | Honda R engine |
| image | Honda R20A Engine 02.JPG |
| manufacturer | Honda Motor Co Ltd |
| production | 2006–present |
| configuration | Naturally aspirated Straight-4 |
| displacement | 1595-1997 cc |
| bore | 81 mm |
| stroke | 77.4 mm |
| 87.3 mm | |
| 96.9 mm | |
| valvetrain | SOHC 4 valves x cyl. with i-VTEC |
| DOHC 4 valves x cyl. with i-VTEC (LF Hybrid engine) | |
| fuelsystem | PGM-FI |
| fueltype | Gasoline |
| coolingsystem | Water-cooled |
| block | Aluminum alloy |
| head | Aluminum alloy |
| compression | 10.5:1-10.7:1 |
| redline | 6800 |
| power | 125-156 PS |
| torque | 15.4-19.4 kgm |
| :: |
|name=Honda R engine |image=Honda R20A Engine 02.JPG |manufacturer=Honda Motor Co Ltd |production=2006–present |configuration=Naturally aspirated Straight-4 |displacement=1595-1997 cc |bore=81 mm |stroke=77.4 mm 87.3 mm 96.9 mm |valvetrain=SOHC 4 valves x cyl. with i-VTEC DOHC 4 valves x cyl. with i-VTEC (LF Hybrid engine) |fuelsystem=PGM-FI |fueltype=Gasoline |coolingsystem=Water-cooled |block=Aluminum alloy |head=Aluminum alloy |compression=10.5:1-10.7:1 |redline=6800 |power=125-156 PS |torque=15.4-19.4 kgm The Honda R engine is an inline-four engine launched in 2006 for the Honda Civic (non-Si). It is fuel injected, has an aluminum-alloy cylinder block and cylinder head, is a SOHC 16-valve design (four valves per cylinder) and utilizes Honda's i-VTEC system. The R series engine has a compression ratio of 10.5:1, features a "drive by wire" throttle system which is computer controlled to reduce pumping losses and create a smooth torque curve.
The engine uses many advanced technologies to improve fuel economy and reduce friction. Piston rings are given an ion plating and weight is reduced with plastic and aluminum parts and variable length intake manifolds that maintain ram air at a wide RPM range. The engine also features piston cooling jets, previously available only on high performance engines, and in the ninth-generation 1.8L Civic (2012-2015) the pistons are treated with molybdenum disulfide applied in a polka-dot pattern. The automatic transmission model is rated at California Air Resources Board (CARB) ULEV-2 (Ultra Low Emissions Vehicle) with fuel economy 25 mpgus city, and 36 mpgus highway. It also uses the same computer (engine control unit) controlled distributorless coil-on-plug ignition as the Honda K-series engines. As of September 2019, the R series engines were only offered outside of Japan.
R16
The R16 engines all have a bore and stroke of 81 x, for an overall displacement of 1.595 L.
R16A
- Found in:
- 2006 Honda Civic (Singapore, Egypt, Turkey Market – FA1/FD series)
- 2012 Honda Civic (Singapore, Egypt, Turkey Market – FB series)
- SOHC iVTEC (Chain driven cam)
- Compression: 10.5:1
- Power: 125 PS at 6,500 rpm
- Torque: 15.4 kgm at 4,300 rpm
- Transmission: 5-speed
- Redline: 6800 rpm
R16B
- Found in:
- 2016 Honda Civic (Mauritius, Singapore, Egypt, Turkey, Cyprus, South Africa, Ukraine and Brunei – FC series)
- SOHC iVTEC (Chain driven cam)
- Compression: 10.7:1
- Power: 125 PS at 6,500 rpm
- Torque: 15.6 kgm at 4,300 rpm
- Transmission: CVT-7, manual-5
- Redline: 6700 rpm
- 2016 Honda Civic (Mauritius, Singapore, Egypt, Turkey, Cyprus, South Africa, Ukraine and Brunei – FC series)
R18
::figure[src="https://upload.wikimedia.org/wikipedia/commons/6/60/Honda_R18A_Engine.JPG" caption="R18A"] ::
The R18 engines have a bore and stroke of 81 x, for an overall displacement of 1.799 L.
R18A1
- Found in:
- 2006–2011 Honda Civic (South Africa/Thailand/Malaysia/Indonesia/Philippines/Taiwan/Japan/Indian-market FD1, Brazil, American/Canadian-market FA1 & FG1)
- 2007–2009 Honda FR-V (European-market BE1)
- 2008–2015 Honda City
- 2007–2014 Honda Stream
- SOHC iVTEC (Chain driven cam)
- Compression: 10.5:1
- Power: 141 PS at 6300 rpm (Japanese Spec)
- 132 PS on Indian variant to use lower octane fuel
- Torque: 17.7 kgm at 4,300 rpm
- Fuel Cut Off: 7150 rpm
- Redline: 6800 rpm
R18A2
- Found in:
- 2006–2011 Honda Civic (European-market FN1 & FK2)
- Compression: 10.5:1
- Power: 140 PS at 6,300 rpm
- Torque: 17.7 kgm at 4,300 rpm
- cruising/economy happens during VTEC under cruising load only.
- Redline: 6800 rpm
- Fuel Cutoff : 7150 rpm
- 2006–2011 Honda Civic (European-market FN1 & FK2)
R18A6
- Found in:
- 2006–2011 Honda Civic (Brazil)
- Local Fuel optimization (FlexFuel - Ethanol or Gasoline)
- Power: 140 PS
- SOHC i-VTEC (ECO Version)
- Redline: 6800 rpm
R18Z1
::figure[src="https://upload.wikimedia.org/wikipedia/commons/7/79/Honda_R18Z1.jpg" caption="R18Z1 on Honda Civic FB2."] ::
- Found in:
- 2012–2015 Honda Civic (FB2, FG3)
- 2016–2020 Honda Civic (FC6, FK5)
- SOHC iVTEC (Chain driven cam)
- Compression: 10.6:1
- Power: 145 PS at 6,500 rpm
- Torque: 17.8 kgm at 4,300 rpm
- Redline: 6800
- Fuel cut off: 7100
- Single valve mode at low RPMs
- iVTEC engages economy cam profile from 1000 rpm to 3500 rpm, under light engine load. Engine runs on low power cam profile by default.
R18Z4
- Found in:
- 2012–2017 Honda Civic (European-market FK2)
- Compression: 10.6:1
- Power: 145 PS at 6,500 rpm
- Torque: 17.8 kgm at 4,300 rpm
- Redline: 6800 rpm
- Fuel cut off : 7100 rpm
- cruising/economy happens during VTEC under cruising load only.
- Balancer Shaft on this R18.
- 2012–2017 Honda Civic (European-market FK2)
R18Z6
- Found in:
- 2013–2017 Honda Jade
- SOHC iVTEC (Chain driven cam)
- Compression: 10.6:1
- Power: 141 PS at 6,500 rpm
- Torque: 17.7 kgm at 4,300 rpm ::figure[src="https://upload.wikimedia.org/wikipedia/commons/9/9a/Honda_R18Z9_Engine.jpg" caption="Honda HR-V Engine"] ::
- 2013–2017 Honda Jade
R18Z9
- Found in:
- 2016–2022 Honda HR-V
- Compression: 10.6:1
- Power: 143 PS at 6,500 rpm
- Torque: 17.7 kgm at 4,300 rpm
- 2016–2022 Honda HR-V
R18ZC
- Found in:
- 2016–2018 Honda HR-V (Brazil)
R18ZF
- Found in:
- 2014–2022 Honda HR-V (Thailand and Indonesia)
- Compression: 10.6:1
- Power: 143 PS at 6,500 rpm
- Torque: 17.5 kgm at 4,300 rpm
- 2014–2022 Honda HR-V (Thailand and Indonesia)
R20
The R20 engines all have a bore and stroke of 81 x, for an overall displacement of 1.997 L.
R20A1
::figure[src="https://upload.wikimedia.org/wikipedia/commons/b/b7/Honda_R20A_Engine.JPG" caption="R20A"] ::
- Found in:
- 2007–2011 Honda CR-V (RE1, RE2)
- 2008 – Honda Stream (RSZ)
- 2013–2015 Acura ILX (DE1)
- Compression: 10.5:1
- Power: 152 PS at 6,200 rpm
- Torque: 19.4 kgm at 4,200 rpm
- Redline: 6800 rpm
- Fuel cut off: 7100 rpm
- SOHC run by timing chain
- iVTEC engages economy cam profile from 1000 rpm to 3500 rpm, under light engine load. Engine runs on power cam profile by default
R20A2
- Found in:
- 2007–2011 Honda CR-V (RE5)
- Compression: 10.5:1
- Power: 152 PS at 6,200 rpm
- Torque: 19.4 kgm at 4,200 rpm
- 2007–2011 Honda CR-V (RE5)
R20A3
- Found in:
- 2008–2012 Honda Accord (CP1) (156 hp)
- 2008–2015 Honda Accord (CU1/CN1/CW1) (156 hp)
- 2013–2020 Proton Perdana (CP3) (156 hp)
- Compression: 10.5:1
- Power: 157 PS at 6,300 rpm
- Torque: 19.2 kgm at 4,300 rpm
R20A5
- Found in:
- 2012–2015 Honda Civic (Southeast Asian FB3)
- Compression: 10.6:1
- Power: 157 PS at 6,500 rpm
- Torque: 19.4 kgm at 4,300 rpm
- 2012–2015 Honda Civic (Southeast Asian FB3)
R20A6
- Found in:
- 2012–2016 – Honda CR-V (RM1, RM2)
- Compression: 10.6:1
- Power: 157 PS at 6,500 rpm
- Torque: 19.4 kgm at 4,300 rpm
- 2012–2016 – Honda CR-V (RM1, RM2)
R20A9
- Found in:
- 2012–2016 – Honda CR-V (RE5)
- Compression: 10.6:1
- Power: 157 PS at 6,500 rpm
- Torque: 19.4 kgm at 4,300 rpm
- 2012–2016 – Honda CR-V (RE5)
R20Z1
- Found in:
- 2012–2015 Honda Civic (FB3)
- SOHC iVTEC (Chain driven cam)
- Compression: 10.6:1
- Power: 155 PS at 6,500 rpm
- Torque: 19.4 kgm at 4,300 rpm
- 2012–2015 Honda Civic (FB3)
R20Z2/R20Z3
- Found in:
- 2013–2017 Honda Accord (CR1)
- Compression: 10.6:1
- Power: 155 PS at 6,500 rpm
- Torque: 19.4 kgm
- 2013–2017 Honda Accord (CR1)
{{anchor|LF}} LF (R20-based hybrid engine)
{{anchor|LFA1}} LFA1 (i-VTEC + Sport Hybrid i-MMD)
This version includes i-MMD ("Intelligent Multi Mode Drive").
- DOHC 16 valve
- Displacement: 1993 cc
- Bore x Stroke: 81x96.7 mm
- Power (Engine): 145 PS / 6,200 rpm
- Torque (Engine): 175 Nm / 3,500 rpm
- Power (Motor): 184 PS / 5,000-6,000 rpm
- Torque (Motor): 315 Nm / 0–2,000 rpm
- Power (Combined): 215 PS / 6,200 rpm
- Honda Odyssey Hybrid/e:HEV (Japan, RC4)
- Honda Stepwgn Hybrid/e:HEV (Japan, RP5)
- Honda Accord Hybrid (N. America) (2014 - 2022)
- Honda CR-V Hybrid (N. America) (2020 - 2022)
- Honda Spirior Hybrid (China) (2017)
{{anchor|LFB1}} LFB1 (i-VTEC + Sport Hybrid i-MMD)
This version includes i-MMD ("Intelligent Multi Mode Drive").
- DOHC 16 valve
- Displacement: 1993 cc
- Bore x Stroke: 81x96.7 mm
- Power (Engine): 145 PS / 6,200 rpm
- Torque (Engine): 175 Nm / 3,500 rpm
- Power (Motor): 184 PS / 5,000-6,000 rpm
- Torque (Motor): 315 Nm / 0–2,000 rpm
- Power (Combined): 215 PS / 6,200 rpm
- Honda Accord Hybrid (Thailand, CV3)
- Honda Odyssey e:HEV Absolute (International, RC4)
{{anchor|LFB-13}}LFB-13 (i-VTEC + Sport Hybrid i-MMD, e:PHEV)
This version includes i-MMD ("Intelligent Multi Mode Drive").
- DOHC 16 valve
- Displacement: 1993 cc
- Bore x Stroke: 81x96.7 mm
- Power (Engine): 145 PS / 6,200 rpm
- Torque (Engine): 175 Nm / 3,500 rpm
- Power (Motor): 184 PS / 5,000-6,000 rpm
- Torque (Motor): 315 Nm / 0–2,000 rpm
- Power (Combined): 215 PS / 6,200 rpm
- Honda CR-V Sport Hybrid e+ (China)
{{anchor|LFB-H4}}LFB-H4 (i-VTEC + Sport Hybrid i-MMD)
This version includes i-MMD ("Intelligent Multi Mode Drive").
- DOHC 16 valve
- Displacement: 1993 cc
- Bore x Stroke: 81x96.7 mm
- Power (Engine): 145 PS / 6,200 rpm
- Torque (Engine): 175 Nm / 3,500 rpm
- Power (Motor): 184 PS / 5,000–6,000 rpm
- Torque (Motor): 315 Nm / 0–2,000 rpm
- Power (Combined): 215 PS / 6,200 rpm
- Honda Accord Hybrid/e:HEV (Japan, CV3)
- Honda CR-V Hybrid/e:HEV (Japan, RT5–RT6)
- Honda Odyssey Hybrid/e:HEV (Japan, RC4) ::figure[src="https://upload.wikimedia.org/wikipedia/commons/3/3c/HONDA_LFC1_ENGINE.jpg" caption="LFC1 Engine in a Honda CR-V e:HEV (RS, China)"] ::
{{anchor|LFC-H4}}LFC-H4
- DOHC 16 valve
- Displacement: 1993 cc
- Bore x Stroke: 81x96.7 mm
- Power (Engine): 141 PS / 6,000 rpm
- Torque (Engine): 182 Nm / 4,500 rpm
- Power (Motor): 184 PS / 5,000–6,000 rpm
- Torque (Motor): 315 Nm / 0–2,000 rpm
- Honda Civic e:HEV (Japan/Europe, FL4/Thailand, FE4)
- Honda ZR-V e:HEV (Australia, RZ4/6)
- Honda CR-V e:HEV (Europe/China, RS)
- Honda Prelude e:HEV (BF1)
References
References
- [http://www.car.go.th//api/render/tagImageEcoA4grayCT/3124835fdaf7497bb7c0700143d7662a Car Thailand] {{dead link. (June 2023)
- "Odyssey Spec List".
- "Stepwgn Spec List".
- (30 January 2023). "Honda Two-Motor Hybrid-Electric System".
- "2017 Honda Spirior 2.0L 146HP L4 E-CVT Hybrid MSRP 265900 Specs and Details {{!}} AutoCango Multilingual Car Specs Library".
- "ECO sticker - Honda Accord Hybrid TECH".
- "Accord Spec List".
- "CR-V Spec List".
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