Best tracker and immobiliser for an Audi A3
Audi A3 owners should start with an immobiliser on the CAN-bus, then add a Thatcham S7 tracker. If you drive an S3 or RS3, the extra driver tag of an S5 tracker is worth having. The DVLA recorded 658 Audi A3 thefts in 2025, number 18 on the UK list.
Our pick for the Audi A3
For the Audi A3 we recommend S7 tracker + immobiliser, as dual layer protection.
Layer one: stop it leaving
An immobiliser that needs your own sequence on the steering-wheel or window buttons before the A3 will pull away.
Layer two: get it back
S7 monitoring for the 30 TFSI to 40 TDI range; S5 driver recognition for the S3 and RS3.
Worth adding
Turn off Advanced Key's keyless unlocking in the menu if you do not use it.
Which setup suits your Audi A3
| Your car | Setup | Why |
|---|---|---|
| 2020 onwards (8Y) | CAN-bus immobiliser, S7 tracker, fob pouch | Advanced Key is exposed to relay. |
| 2012 to 2020 (8V) | CAN-bus immobiliser and S7 tracker | Key programming is the usual route. |
| S3 and RS3 | CAN-bus immobiliser and S5 tracker | Desirable performance cars that insurers watch. |
Options compared for the Audi A3
| Option | Verdict | For this car |
|---|---|---|
| Tracker on its own | Partial | Monitoring tells you where the A3 has gone, yet nothing has stopped it starting on a relayed signal. |
| Immobiliser on its own | Good start | The A3 will not drive on a copied or relayed key, but a car winched onto a trailer stays lost. |
| S7 tracker + immobiliser | Our pick | Proportionate for an everyday A3 Sportback or saloon, and covers both halves of the job. |
| S5 tracker + immobiliser | S3 and RS3 | On the quick ones, an alert the moment the car moves without your tag is worth the extra. |
Do insurers want a tracker on an Audi A3?
Expect detailed questions on an RS3 quote, and sometimes a tracker condition. Standard A3s rarely carry one, though a fitted tracker can still be worth mentioning at renewal.
Audi A3 tracker choices use the S5 and S7 Thatcham categories; S5 vs S7 explained; what insurers mean by approved.
Questions to ask your fitter
- Will the immobiliser work with Audi Advanced Key and the start button?
- Is the tracker's app separate from myAudi?
Audi A3 tracker and immobiliser questions
What is the best tracker for an Audi A3?
A Thatcham S7 tracker with a CAN-bus immobiliser. On an S3 or RS3, choose an S5 tracker.
Does an RS3 need an S5 tracker?
An RS3 is a high-value car that thieves want, so driver recognition is the sensible choice, and some insurers make it a condition of cover.
Is Audi Advanced Key at risk?
Advanced Key unlocks the car when the fob is close, and a relay device can fake that closeness. A pouch at home and a CAN-bus immobiliser close the gap.
More on the Audi A3
- Is my Audi A3 at risk of theft? The full DVLA figures and why thieves pick it.
- How Audi A3s are taken: relay theft on keyless cars, key programming and cloned keys, signal jamming at the kerb.
- Check the theft risk where you park.
- How the S7 and Ghost pairing works on a car like the Audi A3.
- Best tracker for other cars.
Get this setup fitted to your Audi A3
Share the registration year and postcode; an approved installer comes back with a price. Get my Audi A3 quote →
Audi A3 theft figures: DVLA 2025 records (FOI) via What Car?. Advice checked 6 November 2026. Your insurer's wording always comes first. Trademarks belong to their owners.