2023 HONDA CIVIC octane

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Page 34 of 840

HONDA CIVIC 2023  Owners Manual 32
Quick Reference Guide
Refueling (P683)
Fuel recommendation: Unleaded gasoline, pump octane number 87 or higher
Fuel tank capacity:
12.39 US gal (46.9 L)
Models with capless fuel filler
aUnlock the

Page 35 of 840

HONDA CIVIC 2023  Owners Manual 33
Quick Reference Guide
Fuel recommendation: Unleaded premium gasoline, pump octane number 91 or higher
Fuel tank capacity:
12.4 US gal (47.0 L)
Models without capless fuel filler
aUnlock the driver&

Page 43 of 840

HONDA CIVIC 2023  Owners Manual 41
Quick Reference Guide
Why do I hear a screeching 
sound when I apply the 
brake pedal?The brake pads may need to be replaced. Have your vehicle 
inspected by a dealer.
Unleaded premium 
gasoline wi

Page 685 of 840

HONDA CIVIC 2023  Owners Manual 683Continued
Driving
Refueling
Fuel Information
■Fuel recommendation
Use of a lower octane gasoline can cause a  persistent, heavy metallic knocking noise 
that can lead to engine damage.
Use of a l

Page 816 of 840

HONDA CIVIC 2023  Owners Manual 814
Information
Specifications
■Vehicle Specifications
*1: 1.5 L engine models
*2: 2.0 L engine models with auto idle stop
*3: 2.0 L engine models without auto idle stop
■Air Conditioning
*1: 1.5