The A6 is a partner model to the Audi A5 2024. Euro NCAP compared both vehicles to verify that the A5 results can be applied to the A6 and performed additional tests, where necessary.

The passenger compartment remained stable in the frontal offset test.  Dummy readings indicated good protection of the knees and femurs of both the driver and front passenger.  Audi demonstrated that a similar level of protection would be provided to occupants of different sizes and to those sitting in different positions.  Protection of the driver’s chest was rated as marginal, based on dummy readings of compression.  Analysis of the deceleration of the impact trolley during the test, and analysis of the deformable barrier after the test, revealed that the car would be a somewhat aggressive partner in a frontal collision. In the full-width rigid barrier test, protection of the rear passenger’s chest was rated as marginal, based on dummy readings of compression.  Otherwise, all critical parts of the body were well or adequately protected for both occupants. In the side barrier test, protection of all critical body regions was good, and the A6 scored maximum points in this part of the assessment. However, in the more severe side pole impact, chest protection was rated as marginal, based on rib compressions.  Control of excursion (the extent to which a body is thrown to the other side of the vehicle when it is hit from the far side) was found to be adequate. The Audi A6 has a countermeasure to mitigate against occupant-to-occupant injuries in such impacts.  The airbag performed well in Euro NCAP’s tests with dummy readings indicating good protection for both the driver and passenger.  Tests on the front seats and head restraints demonstrated good protection against whiplash injuries in the event of a rear-end collision.  A geometric analysis of the rear seats also indicated good whiplash protection.   The car has an advanced eCall system which alerts the emergency services in the event of a crash, and a system to prevent secondary impacts after the car has been in a collision.  Audi demonstrated that the doors and windows would be openable to allow occupants to escape in the event of vehicle submergence.

Protection of all critical parts of the body was good for the 6 and 10 year dummy, apart from the neck of the 10 year dummy in the frontal impact test, where protection was adequate. The front passenger airbag can be disabled to allow a rearward-facing child restraint to be used in that seating position.  Clear information is provided to the driver regarding the status of the airbag, and the system was rewarded.  The car is equipped with an indirect 'child presence detection' system, which issues a warning when it recognises that a child or infant may have been left in the car.  All of the child restraint types for which the Audi A6 is designed could be properly installed and accommodated in the car.

Protection of the head of a struck pedestrian or cyclist was predominantly adequate, with a few results recorded on the stiff windscreen pillars.  Protection of the pelvis was good at all test locations.  Protection of the pelvis was mostly good, while that of the femur was good at all test locations.  Protection of the knee and tibia was mixed.  The autonomous emergency braking (AEB) system of the Audi can respond to vulnerable road users as well as to other vehicles.  The system’s response both to pedestrians was adequate, but there was no protection for pedestrians to the rear of the car. The system’s performance in tests of its reaction to cyclists was good, but there was no protection against ‘dooring’, where a door is suddenly opened in the path of a cyclist approaching from behind.  Performance of the AEB system was good in tests of its response to motorcyclists.

Overall, the performance of the autonomous emergency braking (AEB) system was good in tests of its reaction to other vehicles, with impacts being avoided in most tests.  A seatbelt reminder system is fitted as standard to the front and rear seats.  The car has an indirect driver status monitoring system as standard, detecting driver fatigue but not distraction.  The lane support system gently corrects the vehicle’s path if it is drifting out of lane and also intervenes in some more critical situations.  The speed assistance system identifies the local speed limit.  The driver can choose to allow the limiter to be set automatically by the system.