What are ADAS and why are they becoming so important in modern vehicles?

ADAS, or Advanced Driver-Assistance Systems, are sophisticated features like Autonomous Emergency Braking (AEB) and Lane Keeping Assist (LKA) that are integral to modern driving. They offer significant safety benefits by helping to reduce accidents, mitigate their severity, and enhance driver comfort. By 2026, they are expected to be standard and reliably functional.

How does the Consumer Rights Act 2015 (CRA 2015) protect car buyers?

The CRA 2015 protects consumers by stipulating that goods, including cars bought from a dealer, must be of satisfactory quality, fit for purpose, and as described. If a car fails to meet these criteria, buyers have rights to redress, including a short-term right to reject within 30 days or a final right to reject after that period if repairs fail.

Can a malfunctioning ADAS system be grounds to reject a car under the CRA 2015 by 2026?

Yes, increasingly, a significant malfunction of an ADAS system could be grounds to reject a car by 2026. As these systems become fundamental for safety and functionality, their failure is likely to render a car not of 'satisfactory quality' or 'fit for purpose' under the CRA 2015, especially if advertised or expected to be working.

What steps should I take if my car's ADAS system fails shortly after purchase?

If your ADAS system fails shortly after purchasing a car from a dealer, you should immediately document everything (photos, videos, dates), contact the seller in writing, state your desired outcome (rejection within 30 days or repair/replacement after), and seek independent advice if the dealer is uncooperative.

CRA 2015: Your Right to Reject a Car for Failing ADAS in 2026

Your Right to Reject: Failing ADAS in 2026 Under the Consumer Rights Act 2015

Advanced Driver-Assistance Systems (ADAS) are no longer futuristic concepts; they're becoming integral to the modern driving experience. From preventing collisions to easing motorway journeys, these sophisticated features are rapidly transitioning from desirable extras to expected standards. But what happens if these high-tech systems fail? And crucially, by 2026, could a malfunctioning ADAS system be grounds to reject your car under the Consumer Rights Act 2015 (CRA 2015)? The answer, increasingly, is yes.

The Evolution of ADAS: From Niche to Necessity

Just a few years ago, features like Autonomous Emergency Braking (AEB), Lane Keeping Assist (LKA), Adaptive Cruise Control (ACC), and Blind Spot Monitoring were reserved for premium models. Today, they're standard across much of the new car market and increasingly common in the used sector. These systems offer significant safety benefits, helping to reduce accidents, mitigate severity, and enhance driver comfort.

By 2026, the expectation around ADAS functionality will be even higher. With greater public awareness and the continuous development of these technologies, a car equipped with ADAS will be inherently expected to have those systems working reliably and safely. Their presence often forms a core part of a vehicle's safety rating and its overall market proposition.

Understanding Your Rights Under the Consumer Rights Act 2015

The CRA 2015 provides robust protection for consumers buying goods, including used cars, from a dealer. It stipulates that goods must be:

Of satisfactory quality: This means they should be free from minor defects, durable, safe, and fit for purpose, taking into account their age, mileage, and price.
Fit for purpose: They must be suitable for the purpose for which they are commonly supplied, as well as any specific purpose the buyer made known to the seller.
As described: They must match any description given by the seller.

If a car fails to meet these criteria, you have a "short-term right to reject" it within 30 days for a full refund. After 30 days, the seller gets one opportunity to repair or replace the faulty item. If that fails, or if it's impossible, you then have a "final right to reject" for a refund (though often with a deduction for usage).

When ADAS Failure Becomes a 'Serious Flaw' by 2026

The critical question for ADAS in 2026 is whether a failure renders the car not of "satisfactory quality" or "fit for purpose." Given the increasing reliance on and expectation of these systems, a significant malfunction is highly likely to meet this threshold.

Consider these scenarios:

Autonomous Emergency Braking (AEB) failure: If your car's AEB system, designed to prevent or mitigate frontal collisions, consistently malfunctions or fails to engage when necessary, this directly compromises a fundamental safety feature. A reasonable person buying a car with AEB in 2026 would expect it to work. Its failure could easily be deemed a breach of satisfactory quality and fitness for purpose.
Lane Keeping Assist (LKA) erratic behaviour: Imagine an LKA system that constantly gives incorrect steering inputs or false warnings, making driving stressful or potentially dangerous. This impacts the car's intended functionality and safety, making it less than satisfactory.
Adaptive Cruise Control (ACC) malfunction: An ACC system that fails to maintain safe distances or suddenly brakes without cause is not merely an inconvenience; it's a safety hazard.

By 2026, the absence of a working ADAS, when advertised or expected, or its significant malfunction, could be seen as a fundamental defect. It's not just a faulty radio; it’s a system designed for safety and driver assistance that isn't performing as a reasonable person would expect from a modern vehicle.

Practical Steps If Your ADAS Fails

If you discover a significant ADAS fault shortly after purchasing a car from a dealer:

Document Everything: Take photos or videos of warning lights, error messages, or instances of system malfunction. Note dates, times, and specific driving conditions.
Contact the Seller Immediately: Notify the dealership in writing (email is best) as soon as possible, clearly stating the issue and that you are exercising your rights under the CRA 2015.
State Your Desired Outcome: If within 30 days, state your intention to reject the car for a full refund. If beyond 30 days, request a repair or replacement.
Seek Independent Advice: If the dealer is uncooperative, consider getting an independent assessment of the fault. You can also contact Citizens Advice for guidance or use an approved Alternative Dispute Resolution (ADR) scheme.

Conclusion

As ADAS technologies become standard, their reliable operation will be increasingly fundamental to a car's "satisfactory quality" and "fitness for purpose." By 2026, consumers buying a car equipped with these systems will have a strong expectation that they function correctly. Should they fail significantly, the Consumer Rights Act 2015 provides a powerful legal framework for you to seek redress, potentially including the right to reject the vehicle. Always be vigilant, informed, and ready to assert your rights as a consumer.