Research · Compact Cars

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.

Combined MPG
32mpg
EPA · 2 versions
NHTSA overall
5of 5 stars
NCAP crash tests
Safety recalls
0campaigns
NHTSA
Owner complaints
596
Top: steering
Fuel cost / yr
$2,400est.
EPA estimate, best version
01 —Recalls

Safety recalls

NHTSA campaigns for this model year
0 recalls found in NHTSA data for the 2018 Honda Civic Si as of Nov 9, 2026.
Data from NHTSA Recalls API · synced Nov 9, 2026NHTSA vehicle page
02 —Complaints

Owner complaints by component

596 complaints filed with NHTSA · Nov 2017 – Aug 2025
  1. Steering224
  2. Fuel system, gasoline89
  3. Fuel/propulsion system70
  4. Electrical system51
  5. Engine50
  6. Air bags20
  7. Structure19
  8. Service brakes16
  9. Power train14

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

By model year

Complaints for each Civic Si model year we’ve synced.

View as table
Model yearNHTSA complaints
201735
2018596
2019353
2020239
Crashes reported
25
Fires reported
4
Injuries reported
21
Deaths reported
1
Data from NHTSA Complaints API · synced Nov 9, 2026 · Full problem breakdownNHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Steering

224 reports8 crashes
“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.”
Owner complaint to NHTSAFiled Aug 5, 2025Steering, Electrical systemODI 11678465

Fuel system, gasoline

89 reports2 crashes
“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.”
Owner complaint to NHTSAFiled Jun 12, 2025Fuel system, gasolineODI 11666529

Fuel/propulsion system

70 reports1 crash
“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…”
Owner complaint to NHTSAFiled Jun 28, 2025Unknown or other, Fuel/propulsion systemODI 11669881
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026
04 —Key specs

Engines, transmissions & drive

2 versions rated by the EPA
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.

Data from EPA fueleconomy.gov · synced Nov 9, 2026EPA listing
05 —Fuel economy

EPA fuel economy by version

City / highway / combined, annual fuel cost and CO₂
EPA
VersionCityHwyComb.Fuel / yrCO₂ g/mi
Civic Si 2Dr
Man 6-spd, 4 cyl, 1.5 L, Turbo · Front-Wheel Drive
283832$2,400279
Civic Si 4Dr
Man 6-spd, 4 cyl, 1.5 L, Turbo · Front-Wheel Drive
283832$2,400279
  • Civic Si 2Dr
    Man 6-spd, 4 cyl, 1.5 L, Turbo
    28 city · 38 hwy · $2,400/yr
    32
    mpg comb.
  • Civic Si 4Dr
    Man 6-spd, 4 cyl, 1.5 L, Turbo
    28 city · 38 hwy · $2,400/yr
    32
    mpg comb.
Data from EPA fueleconomy.gov · synced Nov 9, 2026 · Fuel cost is EPA’s annual estimate (15,000 mi, 55% city)
06 —Safety

NHTSA 5-Star Safety Ratings

2 tested variants
Overall rating
5/ 5
5 of 5
Honda Civic Si 2 DR FWD
Frontal crash
4 of 5
Side crash
5 of 5
Side pole
5 of 5
Rollover
5 of 5
Rollover risk
9.3%
Overall
5 / 5
Honda Civic Si 4 DR FWD
Frontal crash
5 of 5
Side crash
5 of 5
Side pole
5 of 5
Rollover
5 of 5
Rollover risk
9.5%
Data from NHTSA NCAP Safety Ratings API · synced Nov 9, 2026Vehicle 12639Vehicle 12637
07 —Maintenance

Maintenance basics

General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
ItemMilesTimeNote
Engine oil & filter5,000–10,000 mi6–12 monthsFollow the oil-life monitor if fitted
Tire rotation5,000–7,500 miEvery oil changeCheck pressure monthly
Engine air filter15,000–30,000 mi1–2 yearsSooner in dusty areas
Cabin air filter15,000–25,000 mi1–2 years
Brake fluid—2–3 yearsAbsorbs moisture over time
Coolant60,000–100,000 mi5–10 yearsLong-life coolants last longer
Spark plugs60,000–100,000 mi—Iridium/platinum plugs at the long end
12V battery—3–5 yearsHeat 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
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
09 —FAQ

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.

Data from NHTSA & EPA · synced Nov 9, 2026