Research · Midsize Cars

2021 Honda InsightRecalls, problems, MPG & safety

NHTSA lists 3 safety recalls and 25 owner complaints for the 2021 Honda Insight. Most complaints involve forward collision avoidance (8) and service brakes (4). The EPA rates it 48–52 mpg combined, and NHTSA gives it 5 stars overall.

Combined MPG
48–52mpg
EPA · 2 versions
NHTSA overall
5of 5 stars
NCAP crash tests
Safety recalls
3campaigns
Latest May 2026
Owner complaints
25
Top: forward collision avoidance
Fuel cost / yr
$1,250est.
EPA estimate, best version
01 —Recalls

Safety recalls

3 NHTSA campaigns · applies to some vehicles, check your VIN

Air bags: front passenger

Free remedy

Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.

Air bagsReported May 22, 2026NHTSA 26V332000

Air bags: front passenger

Free remedy

Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insight, 2020-2021 CR-V, CR-V Hybrid, Passport, Ridgeline, Accord Hybrid, 2020 Acura MDX, 2022 Acura MDX, 2020-2022 Acura RDX, and 2020-2021 Acura TLX vehicles. The front passenger seat weight sensor may crack and short circuit, failing to suppress the air bag as intended.

Air bagsReported Feb 2, 2024NHTSA 24V064000

Electrical system: dc

Free remedy

Honda (American Honda Motor Co.) is recalling certain 2020 CR-V Hybrid, Accord Hybrid, and 2020-2021 Insight vehicles. The DC-DC converter may shut down and prevent the 12-volt battery from recharging, possibly resulting in a loss of drive power.

Electrical systemReported Dec 17, 2020NHTSA 20V798000
Data from NHTSA Recalls API · synced Oct 29, 2026 · All recall detailsNHTSA vehicle page
02 —Complaints

Owner complaints by component

25 complaints filed with NHTSA · Jan 2021 – Sep 2026
  1. Forward collision avoidance8
  2. Service brakes4
  3. Air bags3
  4. Seats3
  5. Electrical system3
  6. Structure1
  7. Fuel/propulsion system1
  8. Engine1
  9. Exterior lighting1

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 Insight model year we’ve synced.

View as table
Model yearNHTSA complaints
200034
200125
200224
200329
20042
20052
20062
2010119
201141
201259
201345
20145
201999
202031
202125
202233
Crashes reported
1
Fires reported
0
Injuries reported
1
Deaths reported
0
Data from NHTSA Complaints API · synced Oct 29, 2026 · Full problem breakdownNHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Forward collision avoidance

8 reports
“On two (2) occasions, the "collision mitigation braking system" braked with no reason. It has happened on a quiet and straight line residential street with no other moving vehicle, pedestrian, animal, or any other obstruction in view. After one second or so of braking, it returned to normal. It is available for inspection. I have not spoken to the local Honda dealer about it, and there were no adverser repercussions. There were no prior warnings of any system malfunction.”
Owner complaint to NHTSAFiled Jul 23, 2025Forward collision avoidanceODI 11675632

Service brakes

4 reports
“The brake servo control unit feel simulator which reduces the simulation force provided to the brake pedal during emergency or failed conditions and is a key component of realizing a Regenerative Braking System. It provides a good pedal feeling to a driver, improves energy recovery and ensures braking security. My safety has been put at risk as that part is integral to my brake system (including the hybrid function) e.g. my car was in reverse and the brakes were not responding and had to leave my car. I towed my car to a local independent service provider and they confirmed via the OBD-II scanner that confirmed my break servo control feel simulator is bad and would need to be replaced. After doing research, the brake servo part is made in Japan by a company called Nissin. The part has been recalled in Japan and UK due to failures in similar hybrid models. The brake servo serves many functions including ensures consistency, mimics traditional braking, and provide the driver with a natural-feeling brake pedal, especially because the system relies on both regenerative braking and hydraulic friction brakes. For about 3 days I received a cluster of warning signs…”
Owner complaint to NHTSAFiled Nov 12, 2025Service brakesODI 11699002

Air bags

3 reports1 crash
“The contact's daughter owns a 2021 Honda Insight. The contact stated that while her daughter was driving at an undisclosed speed, the front driver's and passenger-side air bags suddenly deployed without impact. There was no warning light illuminated. The contact stated that the air bags cracked the front windshield and injured the driver's arm. The police arrived at the scene, but no police report was filed. The contact was unsure whether the driver had received medical attention. The contact's daughter had someone drive the vehicle to the residence. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 150,000.”
Owner complaint to NHTSAFiled Jun 8, 2026Air bagsODI 11742632
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 29, 2026
04 —Key specs

Engines, transmissions & drive

2 versions rated by the EPA
EPA class
Midsize Cars, Compact Cars
Engines
1.5L 4-cyl hybrid
Transmissions
Automatic (variable gear ratios)
Drive
Front-Wheel Drive
Fuel
Regular 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 Oct 29, 2026EPA listing
05 —Fuel economy

EPA fuel economy by version

City / highway / combined, annual fuel cost and CO₂
EPA
VersionCityHwyComb.Fuel / yrCO₂ g/mi
Insight
Auto (variable gear ratios), 4 cyl, 1.5 L · Front-Wheel Drive
554952$1,250170
Insight Touring
Auto (variable gear ratios), 4 cyl, 1.5 L · Front-Wheel Drive
514548$1,350184
  • Insight
    Auto (variable gear ratios), 4 cyl, 1.5 L
    55 city · 49 hwy · $1,250/yr
    52
    mpg comb.
  • Insight Touring
    Auto (variable gear ratios), 4 cyl, 1.5 L
    51 city · 45 hwy · $1,350/yr
    48
    mpg comb.
Data from EPA fueleconomy.gov · synced Oct 29, 2026 · Fuel cost is EPA’s annual estimate (15,000 mi, 55% city)
06 —Safety

NHTSA 5-Star Safety Ratings

1 tested variant
Overall rating
5/ 5
5 of 5
Honda INSIGHT 4 DR FWD
Frontal crash
5 of 5
Side crash
5 of 5
Side pole
5 of 5
Rollover
5 of 5
Rollover risk
9.3%
Data from NHTSA NCAP Safety Ratings API · synced Oct 29, 2026Vehicle 15110
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

2021 Insight questions

How many recalls does the 2021 Honda Insight have?

3 safety recalls as of Oct 29, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.

What are the most common 2021 Honda Insight problems?

Owners filed 25 complaints with NHTSA. The most-cited components are forward collision avoidance (8), service brakes (4), air bags (3). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.

What MPG does the 2021 Honda Insight get?

The EPA rates the 2021 Honda Insight at 48–52 mpg combined, depending on engine and drivetrain (2 versions rated).

How safe is the 2021 Honda Insight?

NHTSA's New Car Assessment Program gives the 2021 Honda Insight 5 out of 5 stars overall.

Data from NHTSA & EPA · synced Oct 29, 2026