2018 Honda Civic SiRecalls, problems, MPG & safety
NHTSA lists 0 safety recalls and 596 owner complaints for the 2018 Honda Civic Si. Most complaints involve steering (224) and fuel system, gasoline (89). The EPA rates it 32 mpg combined, and NHTSA gives it 5 stars overall.
Safety recalls
Owner complaints by component
- Steering224
- Fuel system, gasoline89
- Fuel/propulsion system70
- Electrical system51
- Engine50
- Air bags20
- Structure19
- Service brakes16
- Power train14
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
What owners report most
Steering
“The electric power steering (EPS) system failed/malfunctioned this past week. When going over 35 mph my steering wheel would become "knotchy/jerky" and lock up and be difficult to turn. As a result, I took it to Honda to which they stated my whole rack and pinion needed total replacement. No warning signs, messages, icons, or lights came on in my car.”
Fuel system, gasoline
“The contact owns a 2018 Honda Civic. The contact stated that she was informed at the State inspection that the vehicle had failed inspection due to the recall of NHTSA Campaign Number: 23V858000(Fuel System, Gasoline); however, the part to do the recall repair was not yet available. Several unknown dealers were contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.”
Fuel/propulsion system
“I own a 2018 Honda Civic that is subject to an open fuel pump recall. My vehicle suddenly became completely inoperable. When attempting to start the car, all of the dashboard lights come on, but the engine will not start or crank. The vehicle has power but will not turn over at all. This failure happened without any prior warning. I contacted Nalley Honda in Union City, GA, and they confirmed that the issue is related to the fuel pump recall. However, they refused to provide towing for the vehicle and told me the earliest appointment available would be over a week out, despite the vehicle being undrivable due to this known safety defect. This situation puts my safety and my family’s safety at risk, as I am now stranded without reliable transportation because of a manufacturer defect. The problem has been acknowledged by the dealership but has not been resolved because of their refusal to assist with towing or provide a timely repair. There were no warning lights or error messages prior to the failure—this happened suddenly. I am requesting that the NHTSA investigate this issue further, as it presents a serious safety concern. I also want to report that Honda…”
Engines, transmissions & drive
- EPA class
- Compact Cars, Midsize Cars
- Engines
- 1.5L 4-cyl turbo
- Transmissions
- Manual 6-spd
- Drive
- Front-Wheel Drive
- Fuel
- Premium Gasoline
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
EPA fuel economy by version
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Civic Si 2Dr Man 6-spd, 4 cyl, 1.5 L, Turbo · Front-Wheel Drive | 28 | 38 | 32 | $2,400 | 279 |
| Civic Si 4Dr Man 6-spd, 4 cyl, 1.5 L, Turbo · Front-Wheel Drive | 28 | 38 | 32 | $2,400 | 279 |
- 32mpg comb.
- 32mpg comb.
NHTSA 5-Star Safety Ratings
- Frontal crash
- 4 of 5
- Side crash
- 5 of 5
- Side pole
- 5 of 5
- Rollover
- 5 of 5
- Rollover risk
- 9.3%
- Frontal crash
- 5 of 5
- Side crash
- 5 of 5
- Side pole
- 5 of 5
- Rollover
- 5 of 5
- Rollover risk
- 9.5%
Maintenance basics
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
- Engine oil & filter5,000–10,000 mi
6–12 months - Tire rotation5,000–7,500 mi
Every oil change - Engine air filter15,000–30,000 mi
1–2 years - Cabin air filter15,000–25,000 mi
1–2 years - Brake fluid—
2–3 years - Coolant60,000–100,000 mi
5–10 years - Spark plugs60,000–100,000 mi
— - 12V battery—
3–5 years
2018 Civic Si questions
How many recalls does the 2018 Honda Civic Si have?
0 recalls found in NHTSA data as of Nov 9, 2026.
What are the most common 2018 Honda Civic Si problems?
Owners filed 596 complaints with NHTSA. The most-cited components are steering (224), fuel system, gasoline (89), fuel/propulsion system (70). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
What MPG does the 2018 Honda Civic Si get?
The EPA rates the 2018 Honda Civic Si at 32 mpg combined, depending on engine and drivetrain (2 versions rated).
How safe is the 2018 Honda Civic Si?
NHTSA's New Car Assessment Program gives the 2018 Honda Civic Si 5 out of 5 stars overall.