Component
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
733 NHTSA complaints about service brakes, hydraulic:power assist:vacuum issues across 31 makes and 207 models.
Data updated August 2026. Counts render from the NHTSA Office of Defects Investigation standardized component field; severity flags cross-reference NHTSA ODI complaint flags for owner-reported crash, fire, and injury markers. This page is for informational purposes and does not replace NHTSA recall notices or a vehicle-specific inspection. Methodology · Corrections.
NHTSA ODI component intake brief
ODI category SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
733 filings · 207 models · 31 makes · vintage August 2026
- FILINGS MODERATE 733 ODI rows
- MODELS 207 nameplates citing this part
- MAKES 31 manufacturers in corpus
- CRASH 7.4% 54 crash-flagged
- RANK #178 of 696 categories
- SEV INJURY 3 deaths · 33 injuries
Filing-volume peers
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM sits MODERATE on ODI intake volume (#178 of 696 standardized categories) with a INJURY severity stamp (3 reported fatalities across 207 models). Open Mitsubishi Montero (category leader) →
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM model-concentration reading
The standout signal for service brakes, hydraulic:power assist:vacuum is model concentration: Mitsubishi Montero accounts for 40 filings (5.5% of this category) out of 733 total.
Moderate-volume categories still show a fingerprint in the model table below, cross-check each nameplate's recall and investigation history before inferring a defect pattern.
Next step: compare Mitsubishi Montero against POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT on filing totals before treating service brakes, hydraulic:power assist:vacuum volume as a purchase signal.
Most Affected Vehicles
| # | Vehicle | Complaints |
|---|---|---|
| 1 | Mitsubishi Montero | |
| 2 | Chevrolet Blazer | |
| 3 | Dodge Neon | |
| 4 | Chevrolet S10 | |
| 5 | Volkswagen Passat | |
| 6 | Ford Explorer | |
| 7 | Chevrolet Tahoe | |
| 8 | Chevrolet Suburban | |
| 9 | Saturn SKY | |
| 10 | Plymouth Neon | |
| 11 | Ford F-150 | |
| 12 | Chevrolet Silverado 1500 | |
| 13 | Lincoln Town CAR | |
| 14 | GMC Jimmy | |
| 15 | Mercury Sable | |
| 16 | Dodge RAM | |
| 17 | Chevrolet Silverado | |
| 18 | Ford Taurus | |
| 19 | Ford Crown Victoria | |
| 20 | Audi A4 | |
| 21 | Volvo S40 | |
| 22 | Toyota Corolla | |
| 23 | Mercury Grand Marquis | |
| 24 | Lincoln Continental | |
| 25 | Dodge Intrepid | |
| 26 | Ford Ranger | |
| 27 | Ford E-350 | |
| 28 | Dodge RAM 2500 | |
| 29 | BMW 745li | |
| 30 | SAAB 9-5 |
Recent Complaints
The contact owns a 2020 Chevrolet Equinox. The contact stated that while driving approximately 40 MPH, the message "Engine Power Reduced" was suddenly displayed. While attempting to stop, the brake pe
The contact owns a 2017 GMC Acadia. The contact stated while driving at an undisclosed speed, the brake pedal was depressed; however, the brake pedal was firm. The contact applied full pressure to the
brake booster
The contact called on behalf of her husband who owns a 2019 GMC Terrain. The contact stated that while her husband was driving approximately 50 MPH, the brakes seized, and the contact veered off into
The contact owns a 2020 Chevrolet Equinox. The contact stated that while exiting the highway at 50 MPH, the brake pedal had hardened and the contact could not depress the brake pedal. Several brake wa
Brakes locked up after turning off of an exit leading to an intersection and incident that could have killed myself and those around me. AAA towed my car to their garage and said it fits a safety re
The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while approaching a stop sign, the contact depressed the brake pedal, but the brake pedal failed to function properly. The con
steering component that breaks, causing a driver to lose control.
The contact owns a 2018 GMC Terrain. The contact stated while driving 35 MPH, the brake pedal was depressed and went to the floorboard without warning. The contact started driving to the dealer after
The contact owns a 2012 Toyota Prius V. The contact stated while driving approximately 35 MPH and at various other speeds, the contact heard an abnormal whirring sound like an electric motor engaging
Dash board instrument panel and radio loses all power, May even cause vehicle to shut off not able to steer, If the cruise control is set it shuts it off. It mostly happens when you apply the brake or
The contact owns a 2013 Ford Edge. The contact stated while driving 45 MPH and depressing the brake pedal, the contact heard air coming from the brake pedal. The contact stated that the low brake air
The contact owns a 2020 Chevrolet Equinox. The contact stated that while driving at approximately 55 MPH, he depressed the brake pedal however, the vehicle failed to respond. As a result, the contact
The contact owns a 2016 Chevrolet Silverado 1500. The contact stated that the vehicle was taken to the dealer to be repaired under NHTSA Campaign Number: 19V645000 (Service Brakes, Hydraulic) and the
The contact owns a 2016 Chevrolet Malibu. The contact stated while driving 65 MPH and depressing the brake pedal, the brake pedal was firm. The contact used the parking brake to slow and stop the vehi
The contact owns a 2015 Cadillac CTS. The contact stated that while driving approximately 40 MPH and attempting to stop, the braking system malfunctioned, and the brake pedal became very difficult to
Power brakes are not functional on startup when cold -- brake pedal is very stiff and takes a lot of pedal pressure to stop the car from moving while exiting driveway. Generally, braking improves w
2009 MERCEDES BENZ ML350. CONSUMER WRITES IN REGARD TO NHTSA SAFETY RECALL 22V-315.
The contact owns a 2018 Chevrolet Malibu. The contact stated while driving approximately 55 MPH, the vehicle shifted into Limp Mode. The contact stated that she pulled over and when the gear was shift
The contact owns a 2018 Chevrolet Malibu. The contact stated that while driving at 70 MPH, the brake pedal depressed and it traveled to the floorboard as the vehicle failed to stop without warning. Af
Related Vehicle Components
Verify with NHTSA · consumer-reported counts are not verified defect findings.