Wheel Alignment and ADAS: Why Accurate Geometry Is Now a Safety-Critical Issue

Modern vehicles are increasingly equipped with technology designed to keep drivers and passengers safe. Adaptive cruise control, automatic emergency braking, lane departure warnings, and blind spot monitoring are now standard or near-standard features on most new cars sold in the UK. These systems are fitted as either standard equipment or optional extras across the vast majority of new car model ranges, and their presence on vehicles arriving in workshops for routine servicing is now the norm rather than the exception.

These systems are not independent of the vehicle's mechanical condition. Every one of them depends, to varying degrees, on accurate wheel geometry. When a vehicle arrives at a garage for a routine wheel alignment check, it is now common for that vehicle to be carrying a suite of active safety systems whose effectiveness is directly tied to the outcome of that job.

This article explains why wheel alignment has become a safety-critical process for ADAS-equipped vehicles, which systems are most affected, and what garages need to understand to service these vehicles correctly.

What Is ADAS and How Common Is It?

Advanced Driver Assistance Systems is a broad term covering vehicle technologies that use sensors, cameras, and radar to monitor the vehicle's surroundings and assist the driver. The most widely fitted ADAS features on UK vehicles include:

• Automatic Emergency Braking (AEB)
• Adaptive Cruise Control (ACC)
• Lane Departure Warning and Lane Keep Assist
• Blind Spot Monitoring
• Rear Cross-Traffic Alert
• Forward Collision Warning

According to Berg Insight's 2025 ADAS and Autonomous Car Research Report, approximately 68.6% of all vehicles sold globally in 2024 fulfilled requirements for SAE Level 1 automated driving or higher, with that figure forecast to reach 90.4% by 2030. In the UK, where over 2 million new cars were registered in 2025 alone according to SMMT data, the volume of ADAS-equipped vehicles arriving at workshops for servicing is growing rapidly every year.

The key point for garages is straightforward: if a vehicle was registered in the last five years, it almost certainly carries at least one ADAS feature whose performance is connected to wheel geometry.

Why Wheel Alignment Directly Affects ADAS Performance

ADAS sensors and cameras are calibrated to a vehicle's geometric zero, meaning they are set up to operate correctly when the vehicle is running in a straight line with all four wheels pointing in the intended direction. This calibration reference point is fixed at the factory or during a professional calibration procedure.

When wheel alignment is out of specification, the vehicle's actual direction of travel no longer matches the direction its sensors expect. The steering angle sensor, which is a core input for almost every current ADAS feature, reads the wheel position as a proxy for vehicle direction. If the alignment is off, the steering angle sensor receives data that does not accurately represent what the vehicle is doing.

The steering angle sensor: the critical link

The steering angle sensor sits on the steering column and measures how far the steering wheel has turned from its centre position. ABS, electronic stability control, and most ADAS features use this data to understand vehicle direction and driver intent. If wheel alignment is incorrect, the driver must apply a constant steering correction to keep the vehicle tracking straight. The steering angle sensor registers this correction as a genuine steering input rather than a compensation for misalignment, and transmits that inaccurate signal to every safety system reading from it.

According to technical guidance published by Professional Motor Mechanic, the steering angle sensor will need resetting after any wheel alignment adjustment, alongside recalibration of affected radar and camera systems.

Forward-facing cameras and radar

Forward-facing cameras, which power lane keep assist and automatic emergency braking, are mounted to the vehicle's structure and calibrated to project along the vehicle's intended forward axis. When the vehicle's geometry is altered by misalignment, the angle at which these cameras view the road ahead shifts subtly but meaningfully. A forward camera that was calibrated when the vehicle was correctly aligned will now be pointing slightly off-centre, causing it to misread lane positions and object distances.

Radar sensors used for adaptive cruise control and forward collision warning face the same issue. The sensor's detection arc is mapped to the vehicle's centreline at calibration. Misalignment shifts the vehicle's actual direction relative to that mapped arc, meaning the radar may fail to detect objects in the expected position, or trigger false alerts.

When Does Wheel Alignment Require ADAS Recalibration?

Not every alignment check requires a full ADAS recalibration. The requirement depends on whether the alignment was adjusted and by how much. However, garages should be aware of the circumstances that consistently require recalibration after alignment work:

It is worth noting that ADAS calibration requirements vary between manufacturers. BMW uses dynamic calibration for cameras and static for radar, while Volkswagen Group vehicles typically use static calibration for both. Garages should always consult OEM specifications for the specific vehicle being serviced before confirming the scope of recalibration work required.

What Happens If ADAS Is Not Recalibrated After Alignment?

The consequences of failing to recalibrate ADAS after an alignment adjustment range from minor inconvenience to serious safety risk, depending on the severity of the geometry change and which systems are affected.

Systems may function incorrectly without warning

Many ADAS features will continue to operate after a wheel alignment without showing fault codes or warning lights. Lane keep assist, for example, may continue to function and intervene, but it will be working from a shifted reference point. The system may believe the vehicle is drifting when it is not, or fail to detect a genuine lane departure. The driver has no way of knowing the system is operating on inaccurate data.

Safety implications and liability

If a vehicle is involved in an accident and it is found that wheel alignment was adjusted without subsequent ADAS recalibration, there can be significant implications for both the vehicle owner and the garage that carried out the work. Insurance assessors are increasingly aware that ADAS systems require recalibration after alignment work. A garage that carries out an alignment and does not flag the ADAS recalibration requirement to the customer may find itself exposed to a claim that the work was incomplete.

This is not a theoretical risk. As ADAS-equipped vehicles become the majority of the UK’s vehicle population, the expectation that garages understand and communicate this requirement will grow accordingly.

What Garages Need to Be Prepared

For most independent garages, full ADAS recalibration requires specialist equipment and software that goes beyond a standard wheel alignment system. However, there are important steps every garage can take to service ADAS-equipped vehicles responsibly.

Identify ADAS fitment before starting alignment work

Before beginning any alignment job, technicians should check whether the vehicle carries ADAS features. This is increasingly straightforward, as most modern vehicles will display ADAS system information in the diagnostic scan. The vehicle's make, model, and year will indicate the likely ADAS fitment level.

Use a CCD system for alignment on ADAS vehicles

Accurate four-wheel alignment data is a prerequisite for ADAS recalibration. Supertracker laser systems measure toe and thrust as standard, with the option to add a digital camber, caster, and SAI gauge attachment for a more complete geometry picture. For workshops handling a high volume of ADAS-equipped vehicles, a full four-wheel CCD alignment system which captures all geometry data simultaneously in a single workflow, provides the most efficient baseline for sensor recalibration.

Supertracker's CCD range, including the STR130 and STR420 systems, supports an ADAS upgrade kit that uses the existing measuring heads to create a physical framework for ADAS calibration. To carry out a full ADAS calibration, workshops will also need a dedicated ADAS calibration bar, compatible software, and diagnostics equipment. Supertracker can advise on suitable ADAS systems to pair with your aligner. Speak to the team for guidance on building a complete alignment and calibration setup.

Communicate the requirement to customers

Even where a garage does not yet offer ADAS calibration in-house, the responsibility to inform the customer remains. If alignment has been adjusted on a vehicle known to carry ADAS, the customer should be made aware that recalibration may be required and referred to a centre equipped to carry it out. Providing this information protects both the customer and the garage, and positions the business as one that understands modern vehicle technology.

The Direction of Travel for ADAS Fitment

The proportion of UK vehicles carrying ADAS technology will only increase. Battery-electric vehicles, which accounted for a record 23.4% of new UK car registrations in 2025 according to SMMT data, are almost universally equipped with comprehensive ADAS suites. As these vehicles move through their first and second service intervals, garages will encounter more ADAS-equipped cars requiring alignment work.

Berg Insight's 2025 research forecast that over 90% of all new vehicles sold globally will carry Level 1 or higher automated driving features by 2030. This is not a future consideration for most UK workshops: it is the current reality for any garage servicing cars built from 2020 onwards.

Garages that invest in the equipment and knowledge to handle ADAS vehicles correctly will be better positioned to retain customers who drive modern cars, and to justify the full value of a professional wheel alignment service.

Conclusion

Wheel alignment has always been important for tyre wear, fuel efficiency, and vehicle handling. The widespread adoption of ADAS technology has added a further dimension to that importance. Accurate geometry is now a precondition for the correct function of the safety systems that drivers increasingly rely on, and that manufacturers, insurers, and regulators increasingly expect to be working correctly.

For garages, this shift means that a wheel alignment check on a modern vehicle carries greater responsibility than it once did. Understanding which vehicles are affected, communicating the ADAS recalibration requirement clearly, and ensuring alignment work is carried out to the standard of accuracy that ADAS sensors demand, are all part of delivering a professional service in 2026.

Supertracker CCD systems are compatible with ADAS upgrade kits, giving workshops the capability to move beyond geometry correction and offer a complete alignment and calibration service. Speak to the Supertracker team to find out which system best suits your workshop and vehicle mix.