A Thatcham-approved tracker is a GPS vehicle security device independently certified by Thatcham Research, the UK’s central automotive risk intelligence organisation, to meet strict standards that insurers accept as proof of adequate theft protection. Following insurance approved tracker best practices is not optional for car and motorhome owners. Insurers require both a certified device and professional installation with documentation before they will honour a theft claim. Get either element wrong and your policy may be void at the worst possible moment. The two recognised certification categories are S5 and S7, and choosing correctly between them determines both your security level and your premium.
1. Insurance approved tracker best practices: understand S5 vs S7 first
The S5 and S7 categories are the two Thatcham-recognised standards that insurers reference, and they are not interchangeable.
S5 trackers include Automatic Driver Recognition (ADR), a second authentication layer that detects whether an authorised driver tag is present when the vehicle starts. If the vehicle moves without a recognised tag, the monitoring centre receives an immediate alert. This makes S5 trackers proactive rather than reactive, which matters enormously against modern theft methods such as relay attacks and key cloning. You can explore the full implications of this technology on the S5 tracker category page.
S7 trackers provide monitored GPS tracking without ADR. They are recovery-focused rather than prevention-focused. The monitoring centre can locate your vehicle after theft is reported, but there is no automatic alert triggered at the point of theft. S7 devices are accepted by many insurers for standard vehicles, but high-value cars, performance vehicles, and many motorhomes will require S5 as a policy condition.
| Feature | S5 | S7 |
|---|---|---|
| ADR (driver tag authentication) | Yes | No |
| Automatic theft alert | Yes | No |
| GPS recovery tracking | Yes | Yes |
| Typical insurer requirement | High-value and performance vehicles | Standard vehicles |
| Premium discount potential | Higher | Moderate |
S5 trackers with ADR offer higher premium discounts than GPS-only systems, with approved trackers reducing premiums by up to 20 to 25 percent. That figure reflects the direct relationship between theft prevention capability and insurer risk assessment.
Pro Tip: Before purchasing any tracker, call your insurer and ask specifically which Thatcham category they require for your vehicle. Do not assume. The answer determines which product you buy.
2. Check your insurance policy before selecting a tracker
The single most common and costly mistake is purchasing a tracker without first confirming what your insurer specifies. Using a tracker that does not match the insurer-specified Thatcham category can result in theft claims being rejected outright. This is not a technicality. It is a contractual condition.
Your policy documents will state either a specific Thatcham category (S5 or S7) or a minimum standard. Some insurers for classic cars, motorhomes, or modified vehicles specify S5 as the only acceptable option. Leased vehicles carry their own requirements, and lease car insurance guidance confirms that tracker compliance conditions vary by finance agreement as well as insurer.
Contact your insurer in writing so you have a record of their stated requirement. This protects you if there is ever a dispute about whether your device met the policy conditions at the time of a claim.
3. Choose a Thatcham-recognised model from a reputable supplier
Not every GPS tracker on the market carries Thatcham certification. Thatcham Research maintains a register of approved devices, and only products that have passed independent testing appear on it. Buying a tracker from a general electronics retailer or an unverified online marketplace carries a real risk of purchasing a non-compliant device.
When selecting a device, verify the following:
- The product listing explicitly states the Thatcham category (S5 or S7)
- The device appears on the Thatcham Research approved products list
- The supplier can provide official certification documentation upon installation
- The brand has a track record of supplying to the UK insurance market
Thatcham Trackers supplies certified S5 and S7 trackers with full documentation, covering both car and motorhome applications. For motorhome owners specifically, the theft risk profile differs from a standard car. Motorhomes are high-value, often stored away from home, and targeted by organised theft groups. An S5 device with ADR is the appropriate standard for most motorhomes, not a minimum-spec S7.
4. Use professional installation by a Thatcham-recognised engineer
DIY or online trackers without professional installation and certification do not satisfy insurer conditions. This is one of the clearest rules in the entire compliance framework, and it is still regularly ignored. A self-installed tracker, regardless of the device’s own certification status, will not be accepted by an insurer as meeting their policy requirement.
Thatcham-recognised engineers are trained to install devices to a standard that preserves the certification. They know where to position the unit to prevent easy removal, how to conceal wiring, and how to complete the paperwork that your insurer needs. The installation certificate is as important as the device itself.
The installation process for a car typically takes two to three hours. For a motorhome, the process may take longer due to the vehicle’s size and the need to route cabling appropriately. Book installation through your tracker supplier or a Thatcham-approved installer network to guarantee the work meets the required standard.
5. Manage your ADR tags as security credentials
ADR tags are the physical tokens that authenticate a driver when an S5 tracker is fitted. Treating ADR tags as security credentials with separate storage from vehicle keys is the single most important operational practice for S5 tracker owners.
The logic is straightforward. If a thief steals your keys and your ADR tag is on the same keyring, the S5 system’s two-factor protection collapses to a single factor. The vehicle starts without triggering an alert, and the ADR system provides no additional security at all. Failing to separate tags from keys reduces the ADR concept to a single factor and undermines the entire security architecture.
Best practices for ADR tag management:
- Store your ADR tag separately from your vehicle keys at all times, including at home
- If multiple drivers use the vehicle, issue a tag to each authorised driver and register all tags with the monitoring centre
- Do not leave spare tags in the vehicle’s glovebox or centre console
- Report lost or stolen tags to your monitoring centre immediately so they can be deactivated
- Review the number of active tags periodically and remove tags for drivers who no longer use the vehicle
Pro Tip: Treat your ADR tag the way you treat a bank card. You would not leave your bank card attached to your PIN number. Apply the same discipline to your tracker tag and vehicle keys.
6. Keep installation certificates and maintain your monitoring subscription
Documentation and active monitoring are the two ongoing compliance requirements that owners most frequently neglect after installation.
Your installation certificate proves to your insurer that the device was fitted by a qualified engineer to the required standard. Keep this document with your other vehicle records and provide a copy to your insurer when your policy is set up or renewed. If you cannot produce the certificate, your insurer may treat the tracker as unverified.
Lapsed monitoring subscriptions void insurance tracker conditions even for manufacturer systems with Thatcham approval. The monitoring centre is the operational backbone of any approved tracker. Without an active subscription, there is no one to receive theft alerts, no one to contact the police, and no live tracking data. Your insurer’s requirement is for a functioning, monitored system, not simply a device fitted to the vehicle.
Set a calendar reminder for your subscription renewal date and treat it with the same priority as your MOT or road tax. Check the subscription status at each insurance renewal and confirm with your insurer that the monitoring service remains active and compliant.
7. Avoid the most common myths and mistakes
Several persistent misconceptions lead car and motorhome owners to believe they are compliant when they are not.
Myth: any GPS tracker satisfies insurance requirements. Standard consumer GPS trackers, including popular personal tracking devices, carry no Thatcham certification. Insurers do not accept them as meeting policy conditions regardless of their technical capabilities.
Myth: the tracker fitted by the manufacturer counts. BMW ConnectedDrive and Mercedes Me are described by their manufacturers as convenience features, not security products. They lack Thatcham certification and can be switched off via the vehicle’s infotainment system. Insurers do not count them as approved trackers.
Myth: a self-installed tracker is acceptable if the device is certified. Certification applies to the device and the installation method together. A certified device fitted incorrectly or without a qualified engineer does not meet the insurer’s condition.
Mistake: ignoring subscription renewal notices. Subscription lapse is the most common cause of unintentional non-compliance among owners who installed correctly at the outset. The device remains in the vehicle but the monitoring service has ended, leaving the owner exposed.
Mistake: keeping ADR tags with keys. As covered above, this negates the two-factor protection that S5 trackers are designed to provide and may affect the validity of a theft claim.
Key takeaways
Thatcham-approved tracker compliance requires the correct category device, professional installation with certification, and an active monitoring subscription maintained without lapse.
| Point | Details |
|---|---|
| Confirm insurer requirements first | Ask your insurer for the specific Thatcham category before purchasing any device. |
| S5 vs S7 is not a minor distinction | S5 adds ADR for proactive theft alerts; S7 is recovery-only and may not satisfy all policies. |
| Professional installation is mandatory | DIY installation voids insurer acceptance regardless of the device’s own certification. |
| ADR tags must be stored separately | Keeping tags with keys collapses two-factor security to a single factor. |
| Subscription lapse creates coverage gaps | An inactive monitoring service renders even a correctly installed tracker non-compliant. |
What experience with Thatcham trackers has taught us
The most consistent pattern we observe is that owners focus entirely on the purchase decision and treat everything that follows as administrative. That approach creates risk. Selecting the right device is the starting point, not the finish line.
The owners who benefit most from their trackers are those who treat ADR tag management as a daily habit, not a one-time setup task. They store tags separately, register every authorised driver, and check their subscription status at each renewal. These are not complex behaviours. They are simply consistent ones.
We have also seen cases where a vehicle was stolen and the owner had a correctly installed, certified S5 tracker fitted. The claim was still complicated because the monitoring subscription had lapsed three months earlier and the owner had not noticed. The device was in the vehicle. The certification was valid. But the monitoring service was inactive, and the insurer treated the condition as unmet. That outcome is entirely avoidable.
Proactive communication with your insurer matters too. If you upgrade your tracker, change vehicles, or add a new authorised driver, inform your insurer in writing. Do not assume the policy automatically reflects your current setup. Insurers assess compliance based on what they have on record, not what is physically fitted to your vehicle.
— Thatcham Trackers
Find the right certified tracker for your vehicle
Thatcham Trackers supplies the full range of S5 and S7 certified devices for cars and motorhomes, with professional installation by Thatcham-recognised engineers and ongoing 24/7 monitoring included.
Every device in the collection carries official Thatcham certification, and installation is completed with full documentation for your insurer. Whether your policy requires an S5 tracker with ADR or an S7 GPS monitoring device, you can choose the right tracker for your specific vehicle and insurance requirements. Browse the complete certified tracker range to find the correct category for your car or motorhome, or contact the Thatcham Trackers team directly for guidance before you buy.
FAQ
What is a Thatcham-approved tracker?
A Thatcham-approved tracker is a vehicle GPS security device independently tested and certified by Thatcham Research to meet defined security standards. Insurers use Thatcham certification to verify that a tracker meets their policy conditions for theft protection.
Do I need an S5 or S7 tracker for my insurance?
The required category depends on your insurer and vehicle type. High-value cars, performance vehicles, and motorhomes typically require S5 with ADR, while standard vehicles may be accepted with S7. Always confirm the specific requirement with your insurer before purchasing.
Can I install a Thatcham tracker myself?
No. Professional installation by a Thatcham-recognised engineer is a mandatory condition for insurer acceptance. A self-installed device, even if the product itself is certified, will not satisfy the insurer’s requirement.
Does the tracker my car manufacturer fitted count as Thatcham approved?
Factory-fitted systems from manufacturers such as BMW and Mercedes typically lack Thatcham certification and are classified as convenience features rather than security products. They do not satisfy insurer conditions for an approved tracker.
What happens if my monitoring subscription lapses?
A lapsed subscription voids the insurance condition attached to your tracker, even if the device remains physically fitted and was originally installed correctly. Renew your subscription before it expires and confirm active status at each insurance renewal.