The 2.0-liter Honda R20Z was produced from 2012 to 2017 for the ninth-generation Accord and Civic sedans, mainly for emerging markets. It is a rare 155-hp R-series engine.
R-series family: R18A, R20A, R16B, R20Z.
Specifications
| Production years | 2012-2017 |
| Displacement, cc | 1997 |
| Fuel system | distributed injection |
| Power output, hp | 155 |
| Torque output, Nm | 190 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 81 |
| Piston stroke, mm | 96.9 |
| Compression ratio | 10.6 |
| Features | SOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | i-VTEC |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.2 |
| Fuel type | petrol |
| Euro standards | EURO 5 |
| Fuel consumption, L/100 km (for Honda Accord 2015) — city — highway — combined |
9.5 6.0 7.4 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 107 |
The engine was installed on:
- Honda Accord 9 (CR) in 2013 – 2017;
- Honda Civic 9 (FB) in 2012 – 2015.
Disadvantages of the Honda R20Z engine
- A reliable engine that lasts 300,000 km or more with proper maintenance;
- Owners who save on maintenance may face oil consumption before 100,000 km;
- Poor fuel quickly kills the oxygen sensors and the catalytic converter;
- There are no hydraulic lifters, so the valve clearances must be adjusted every 50,000 km.
Frequently asked questions about the Honda R20Z
How much power does the Honda R20Z make?
The Honda R20Z develops 155 hp and 190 Nm of torque.
How much oil does the Honda R20Z take and which one?
Engine oil capacity: 4.2 liters. Recommended oil: 5W-30.
Does the Honda R20Z have a timing belt or chain?
The Honda R20Z uses a timing chain.
Is the Honda R20Z turbocharged?
No, the Honda R20Z is naturally aspirated.
Does the Honda R20Z need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the Honda R20Z last?
The typical lifespan of the Honda R20Z is ~300 000 km with proper maintenance.
What is the fuel consumption of the Honda R20Z?
Honda Accord 2015: city 9.5, highway 6.0, combined 7.4 L/100 km.
What cars was the Honda R20Z installed on?
Honda Accord 9 (CR) in 2013 - 2017; Honda Civic 9 (FB) in 2012 - 2015.
What are the common problems of the Honda R20Z?
A reliable engine that lasts 300,000 km or more with proper maintenance. Owners who save on maintenance may face oil consumption before 100,000 km. All known problems.
