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Honda CR-V and Accord Phantom Braking (2017-2021): What Owners Report

Phantom braking means the car brakes hard on its own with nothing in the way. For Honda it involves the Collision Mitigation Braking System (CMBS). As of October 29, 2026, 885 NHTSA complaints describe it for the 2017-2021 CR-V and 2018-2021 Accord. NHTSA has had an engineering analysis open since April 2024, with no recall so far. There is no fix to look for, so test-drive the car on a highway and ask the dealer for a written record.

Published · Data checked · By CarTold Editorial Team · Methodology

On this page
  1. Key findings
  2. The evidence
  3. The details
  4. What to check before buying
  5. Limitations
  6. Sources and methodology
  7. Related reports and tools
  8. Sources

Key findings

  • 885 matching complaints: 638 for the 2017-2021 CR-V and 247 for the 2018-2021 Accord.
  • The share of CR-V complaints that describe phantom braking stays between 9% and 15% in every model year from 2017 to 2021. On the Accord it jumps from 1.9% for 2017 to 6.4% for 2018, the first model year with Honda Sensing standard on every trim.
  • Owners filed only 195 of the 885 before NHTSA opened its first investigation on February 21, 2022. In February 2022 alone, 80 came in, against 1 in January.
  • 21 of the 885 reports say there was a crash, and 39 say someone was hurt (43 injuries in total).
  • NHTSA's own count, which covers model years up to 2022, is 1,294 complaints: 31 alleging a crash and 50 alleging an injury (EA24-002 opening résumé).

The evidence

YearCR-VShareAccordShare
2017167 of 1,7779.4%11 of 5841.9%
2018215 of 2,1619.9%129 of 2,0136.4%
2019158 of 1,10714.3%59 of 7927.4%
202042 of 4449.5%36 of 4048.9%
202156 of 44412.6%23 of 2937.8%

Each cell shows matching complaints out of all complaints for that model year. The 2017 Accord is shown for comparison only and is not part of the 885.

When the 885 reports were filed, compared with NHTSA's actions:

FiledReportsWhat happened
2017-2021187No investigation yet
2022306Feb 21: NHTSA opens preliminary evaluation PE22-003 (2017-2019 CR-V, 2018-2019 Accord)
2023121
2024124Apr 15: upgraded to engineering analysis EA24-002, scope widened to 2020-2022 models
202597
2026 to Oct 2950EA24-002 still open; no recall

The details

What owners describe. The car brakes hard at speed with a clear road ahead, About a quarter mention a brake warning on the dash, and many mention traffic behind them and the risk of being rear-ended. Shadows, overpasses, bridges and oncoming or parked trucks are named as triggers in a minority of reports.

What NHTSA says. Its April 2024 résumé reports that Honda considers some owners may not fully understand how CMBS works and what it cannot do. It also notes that many complaints say dealers could not reproduce the braking or called it normal. The agency upgraded the case to look at how widespread and how serious the activations are (EA24-002).

Why the CR-V numbers may understate the problem. On the 2017-2019 CR-V, Honda Sensing (which includes CMBS) was only on EX and higher trims. It became standard on every 2020 CR-V (Honda). An LX from those years cannot have this fault, but its complaints still count in the totals, so the share among cars that have CMBS is higher than the table shows. On the Accord, Honda Sensing was standard on all 2018 trims (Honda).

Why reports bunched in 2022. Filings jumped the month the first investigation opened and stayed higher afterwards. Publicity makes owners more likely to file, so the timeline shows when people reported, not when the braking happened.

What to check before buying

  1. Check whether the car has CMBS. On a 2017-2019 CR-V, the LX trim has no Honda Sensing. All 2020-2021 CR-Vs and all 2018-2021 Accords have it.
  2. Look up the VIN on NHTSA's recall page. As of October 29, 2026 there is no recall for this, but one could follow the open investigation.
  3. Drive it where owners report problems. Use a highway with overpasses and a road with parked cars or oncoming trucks. Make sure nobody is following closely while you test.
  4. Ask the seller directly. Ask whether the car ever braked on its own and whether a dealer looked at it. Get any repair orders that mention CMBS, the radar or the camera.
  5. Check the sensors. Look for windshield replacement or front-end collision repair. Ask whether the camera and radar were recalibrated afterwards.

Limitations

Complaints are owners' accounts, not confirmed defects. We read 60 randomly chosen matched reports by hand. 51 (85%) clearly described the car braking on its own without a reason. So the totals are approximate. We cannot separate trims, so we cannot calculate a rate per CMBS-equipped car. Sales volumes differ by year and model. Phantom braking can also be confused with other systems such as brake hold or low-speed braking, which we tried to exclude. NHTSA has not concluded that a defect exists.

Sources and methodology

Queried from CarTold's copy of NHTSA complaint, recall and investigation records on October 29, 2026. A complaint is counted when it describes the car braking, stopping or slowing hard by itself, names the collision or emergency braking system or its warning, and says there was no obstacle or reason. Reports about brake hold or unintended acceleration are excluded unless they also name the emergency braking system. Each complaint is counted once, by its ODI number, under its model year.

Accuracy check. We tuned the pattern on one random sample of 60 reports, then measured it on a fresh sample of 60 drawn afterwards: 51 of 60 (85%) were correct. Investigation details come from NHTSA's EA24-002 opening résumé, and trim facts from Honda's press releases.

Sources