Driver-assistance sensors and the cost of repairs

Advanced driver-assistance systems such as automatic emergency braking, lane keeping and blind-spot warning rely on cameras, radar and other sensors placed in bumpers, grilles, mirrors and windshields, exactly where minor crashes and cracked glass happen. Replacing those parts often means replacing sensors and then calibrating them, which makes small repairs more expensive and slower. The trade-off is that the same systems prevent enough crashes that, according to the Highway Loss Data Institute, equipped vehicles cost insurers less overall.

Where the sensors are and what a repair involves

After replacing or removing a sensor, or the part it is mounted on, the shop usually must perform an ADAS calibration so the system aims and measures correctly. IIHS notes that automakers stipulate calibration any time a sensor is removed and replaced or reinstalled, and that some calibrations need large spaces, specialized training and expensive equipment (IIHS). Mitchell's Ryan Mandell told Claims Journal in 2026 that radar sensors behind a bumper can mean the bumper cannot be repaired at all, because repair material may impede the sensor (Claims Journal).

What the data shows about cost

Repair data and claims data tell a consistent story.

• Calibrations are now routine. CCC Intelligent Solutions reported that 28.3% of repairable appraisals included a calibration in the fourth quarter of 2025, up from 21.8% a year earlier (Claims Journal).
• Newer cars cost more to fix. Mitchell found repairs on models under three years old cost about 10% more on average than on four- to six-year-old vehicles, driven largely by sensor density.
• Glass gets expensive. IIHS reports that a simple windshield replacement can cost as little as $250, but an HLDI study found vehicles with front crash prevention were much more likely to have glass claims of $1,000 or more, much of it likely related to calibration.

Why these cars still cost insurers less

In an August 2026 analysis, IIHS-HLDI's Matt Moore compared otherwise identical 2017-22 vehicles with and without a bundle of crash avoidance features (IIHS-HLDI):

The higher cost per claim partly reflects sensor replacement, but also the fact that the systems prevent many low-speed fender benders, leaving a larger share of more serious crashes. Every crash avoided is a deductible you do not pay.

Front crash prevention is also becoming universal. IIHS reports that NHTSA in 2024 finalized a requirement for automatic emergency braking on nearly all new light vehicles by September 2029 (IIHS).

When calibration goes wrong

IIHS surveyed owners who had driver-assistance features repaired. About half reported problems with the features afterward. Problems were more common when the repair followed crash damage (nearly three-quarters) or a windshield replacement (about two-thirds). IIHS attributed part of this to shops struggling with complex, frequently updated calibration procedures that are not standardized across automakers. Most respondents said insurance or warranty covered the cost, minus any deductible.

How insurance pays for it

Calibration is part of the cost of a covered repair. If your car is hit, the collision claim or the other driver's liability claim should include the scans and calibrations the manufacturer's procedures call for. If a rock cracks your windshield, the glass claim should include recalibrating the forward camera. With full glass coverage, that may cost you nothing; see full glass coverage and zero-deductible windshield repair.

Points that commonly cause friction:

• Missing line items. An initial estimate may not include pre- and post-repair scans or calibration. A shop can request a supplement.
• Parts choice. Non-factory bumper covers, brackets or glass can affect how sensors behave. If in doubt, ask for OEM parts around sensors; Aftermarket vs OEM parts in insurance repairs explains your options.
• Sublet work. Some shops send calibrations to a dealer or mobile specialist, which can add days.

Questions to ask the shop

1. Will you follow the manufacturer's published repair and calibration procedures for my car?
2. Do you do calibrations in-house, or send them out?
3. Will you give me the pre- and post-repair scan reports and the calibration printout?
4. Are the parts around the sensors OEM?
5. If a warning light appears after I pick the car up, how quickly can you recheck it?

Insurer direct repair programs and independent shops both handle this work; your right to choose is covered in choosing a repair shop: direct repair programs and your rights.

What it means for your premium and deductible

Crash avoidance features are reflected in how insurers rate vehicle models, and some insurers give safety-feature discounts. Meanwhile, more small repairs now cost more than a typical deductible. If you are weighing a higher deductible, run the numbers with the deductible break-even calculator, keeping in mind that a bumper or windshield repair on a sensor-heavy car can exceed $1,000. For the wider trend, see why car repairs cost so much more than they used to.

Key takeaways

• Sensors in bumpers, mirrors and windshields make minor repairs costlier because parts must be replaced and calibrated.
• CCC found 28.3% of repairable appraisals included a calibration in late 2025, up from 21.8% a year earlier.
• HLDI found equipped vehicles cost about 10% more per collision claim but had about 5% lower collision losses overall.
• Ask for manufacturer procedures, scan reports and calibration records with every repair.
• Calibration is part of a covered repair; it should be in the collision, liability or glass claim.