Best tracker and immobiliser for a BMW 1 Series
A 1 Series is best protected by a CAN-bus immobiliser and a monitored S7 tracker, stepping up to S5 on an M135i or M140i. Relay and key programming are the main threats. The DVLA recorded 754 BMW 1 Series thefts in 2025, number 15 on the UK list.
Our pick for the BMW 1 Series
For the BMW 1 Series we recommend S7 tracker + immobiliser, as dual layer protection.
Layer one: stop it leaving
A CAN-bus immobiliser that blocks programmed and relayed keys.
Layer two: get it back
A Thatcham S7 tracker; S5 on M135i and M140i.
Worth adding
A fob pouch for Comfort Access keys.
Which setup suits your BMW 1 Series
| Your car | Setup | Why |
|---|---|---|
| 2011 to 2019 (F20, rear-wheel drive) | CAN-bus immobiliser and S7 tracker | Key programming is common on these cars. |
| 2019 onwards (F40) | CAN-bus immobiliser, S7 tracker, fob pouch | Comfort Access adds relay risk. |
| M135i and M140i | CAN-bus immobiliser and S5 tracker | Performance models are taken whole and for parts. |
Options compared for the BMW 1 Series
| Option | Verdict | For this car |
|---|---|---|
| Tracker on its own | Partial | Does not stop a programmed key starting the 1 Series. |
| Immobiliser on its own | Good start | Blocks the programmed-key start, but cannot find the car if it is lifted. |
| S7 tracker + immobiliser | Our pick | Right for most 1 Series hatchbacks. |
| S5 tracker + immobiliser | M models | Driver recognition makes sense on the M135i and M140i. |
Do insurers want a tracker on a BMW 1 Series?
M models often come with tracker questions from insurers. For a standard 1 Series a tracker is usually optional.
BMW 1 Series 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 block a key programmed through the diagnostic port?
- Will BMW's own servicing be affected?
BMW 1 Series tracker and immobiliser questions
What is the best tracker for a BMW 1 Series?
A Thatcham S7 tracker with a CAN-bus immobiliser. On an M135i or M140i, choose an S5 tracker.
Is key programming a risk on a 1 Series?
It is one of the routes thieves use on BMWs. A CAN-bus immobiliser means a new key will not start the engine.
Will an immobiliser affect my BMW servicing?
It should not. Tell the garage, and use the service mode your fitter sets up.
More on the BMW 1 Series
- Is my BMW 1 Series at risk of theft? The full DVLA figures and why thieves pick it.
- How BMW 1 Seriess 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 BMW 1 Series.
- Best tracker for other cars.
Get this setup fitted to your BMW 1 Series
Share the registration year and postcode; an approved installer comes back with a price. Get my BMW 1 Series quote →
BMW 1 Series 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.