FAQ
Frequently Asked Questions
Straight answers on repair times, warranties and how we diagnose — so you know what to expect before your car comes in.
Repair Times
How long does an automatic gearbox repair take?
Most gearbox diagnostics are completed within a day. A repair or rebuild typically takes 2–5 working days depending on parts availability and the extent of the fault. Once we have diagnosed the issue we will give you a clear, realistic timeframe before any work starts.
How long does a hybrid battery or EV diagnostic take?
High-voltage system diagnostics usually take between half a day and a full day. If a hybrid battery health check or module-level test is required, allow up to a day. We will always confirm the expected turnaround before booking.
Can you fix my car the same day?
Straightforward servicing, diagnostics and minor repairs can often be completed same-day. Gearbox rebuilds and hybrid battery work need longer because of parts ordering and specialist testing. Send us your details on WhatsApp and we will tell you what is realistic for your car.
Do you offer a courtesy car while mine is in?
We do not currently run our own courtesy car fleet, but we are happy to talk through local hire and collection options so you are not left stranded while your vehicle is with us.
Warranties
Do your repairs come with a warranty?
Yes. Gearbox repairs and rebuilds are covered by a parts-and-labour warranty — we will confirm the exact warranty period for your specific repair on your invoice before work begins.
Is the warranty nationwide or only at BMS Garage?
Our labour warranty is honoured at our Southampton workshop. Parts supplied by us typically carry the manufacturer’s own warranty, which is usually valid nationwide through the parts supplier’s network.
Are the parts you fit covered under warranty?
Genuine and quality-approved parts we supply come with the manufacturer’s warranty. If a fitted part fails within the warranty period, bring the car back and we will investigate and put it right.
Diagnostic Process
What does a diagnostic include?
A diagnostic at BMS Garage combines live data scanning, mechanical inspection and our specialist knowledge of gearboxes and hybrid/EV systems. We read fault codes, road-test where needed, and trace the actual root cause rather than simply clearing a warning light.
Why is a proper diagnosis important before quoting?
Because the same symptom can have several causes. A juddering gearbox could be a solenoid, a worn clutch pack or even an engine misfire. Quoting accurately requires knowing the real cause — a proper diagnosis saves you from paying for parts that do not fix the problem.
Can I book a diagnostic without committing to a repair?
Absolutely. Booking a diagnostic simply tells you what is wrong and what it will take to fix. You receive a clear report and quote, and you decide whether to go ahead — there is no obligation to have the repair carried out with us.
What information should I give you before booking a diagnostic?
Your registration number, the make and model, a description of the symptoms (when they happen, how long they have been present) and any warning lights or fault codes you have seen. The more detail you give us, the faster we can get to the cause.
Booking & General
How do I book a repair or diagnostic?
The quickest way is to message us on WhatsApp on 07707 075087 with your registration and a short description of the fault. You can also call us or use the enquiry form on the contact page. We will confirm a slot and tell you what to bring.
What information should I send on WhatsApp?
Send your registration number (so we can look up your vehicle), the make and model, the fault or warning lights you are seeing, and how long it has been happening. A photo of the dashboard warning lights helps too.
Do you work on all makes and models?
Yes — we diagnose and repair automatic gearboxes, hybrid and EV systems and carry out full servicing across all makes. Our specialist focus is automatic transmissions and high-voltage systems, but our general servicing covers every vehicle that comes through the door.
Where are you located?
We are at Unit C, Liners Industrial Estate, Pitt Rd, Freemantle, Southampton SO15 3FQ. Send us a message before heading over so we can make sure a bay and technician are ready for you.
Still not sure what your car needs? Send your reg on WhatsApp — we will tell you the next step, with no obligation.
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