Diag Drive Terms of Service

Last updated: 8 November 2026

These terms are an agreement between you and Diag Drive (“Diag Drive”, “we”, “us”) for the Diag Drive apps on iPhone, Android, Mac and Windows and the related services. By using the app you accept these terms. If you don’t agree, please don’t use the app. Questions: support@motorlane.uk.

What Diag Drive does

Diag Drive reads diagnostic information from your vehicle through a compatible OBD-II adapter, explains fault codes and live data in plain English, and offers an optional AI assistant. The desktop app adds deeper tools such as multi-module scans, live graphs and reports.

Important safety note

Diag Drive gives you information to help you understand your vehicle. It is not a substitute for a qualified mechanic, and we don’t guarantee that any reading, cause, suggestion or AI answer is complete or correct for your specific vehicle. Always use professional judgement, follow the manufacturer’s guidance, and never rely on the app for anything affecting safety. Don’t operate the app while driving. You are responsible for any action you take on your vehicle.

Accounts

You can use the basic app without an account. Some features need one. Keep your login details secure; you’re responsible for activity on your account. You must be old enough to enter a contract where you live. You can delete your account at any time from the app.

Subscriptions, free credits and plans

• Free: core diagnostics plus a small number of AI credits.
• DIY and Pro: paid plans that add more (or unlimited, within a fair-use limit) AI use and, on desktop, the Pro tools. The price and what each plan includes are shown before you pay.
• The desktop/Pro plan may include more than the mobile plan for the same price; that’s intended, and the current features are always shown before purchase.

Billing, renewal and cancellation

• Where you pay: on iPhone and Android, subscriptions are billed by Apple or Google through your store account. On Mac and Windows, they are billed on the web through our payment provider, Stripe, who handles your card details securely — we never see your full card number.
• Auto-renewal: subscriptions renew automatically at the end of each period at the then-current price, using your chosen payment method, until you cancel. We’ll apply any price change only to future periods.
• Cancelling: you can cancel at any time — from inside the app, from our billing portal, or (for store purchases) in your Apple or Google account settings. When you cancel, your plan stops renewing and you keep access until the end of the period you’ve already paid for.
• Unpaid subscriptions: if a renewal payment fails, we’ll attempt it again for a short period. If it still can’t be collected, the subscription is cancelled and the plan ends.
• Refunds: store purchases are refunded under Apple’s or Google’s policies. For web purchases, contact us; you also keep any statutory rights you have under UK consumer law.

Acceptable use

Don’t misuse the service: no breaking the law, no attempting to disrupt, reverse-engineer or gain unauthorised access to the service or others’ accounts, no using it to damage a vehicle you don’t own or have permission to work on, and no automated abuse of free credits. We may suspend accounts that break these rules.

Your content

You keep ownership of the vehicle data, photos and questions you add. You grant us permission to process them to run the service (for example, to back up your garage or to send an AI request to our provider). See the Privacy Policy for details.

Availability and changes

We aim to keep the service running but can’t promise it will always be available or error-free, and we may change, suspend or stop features. We may update these terms; if we make a significant change we’ll give reasonable notice, and continuing to use the app means you accept the new terms.

Liability

Nothing in these terms limits liability that can’t be limited by law (such as for death or personal injury caused by our negligence, or fraud). Otherwise, to the extent the law allows, Diag Drive is provided “as is”, and we aren’t liable for vehicle damage, repair costs, lost data or other losses arising from your use of the app or reliance on its information. Our total liability to you is limited to what you paid us in the 12 months before the claim.

Governing law

These terms are governed by the laws of England and Wales, and the courts of England and Wales have jurisdiction, without affecting consumer-protection rights you have where you live.

Diag Drive · Privacy Policy · support@motorlane.uk