Jay is the best! I’ve used him several times for several different issues I’ve encountered. He’s very responsive, takes his time to explain the issue and talks through the process throughout. He recently repaired a thermostat/fan issue on my Vauxhall Astra and saved me a lot of money taking it to main dealer. Thanks again!
Hybrid battery specialist in Rochford
Hybrid battery testing, repair and replacement. A hybrid warning light does not automatically mean a new car or a main dealer bill.

Signs the hybrid battery needs looking at
A hybrid system warning light, the petrol engine running much more than it used to, fuel economy dropping off, the battery gauge swinging quickly between full and empty, or less pull when you accelerate. Hybrid batteries age like any other battery, and these are the usual signs.
Testing, repair and replacement
JRock Autos lists hybrid battery testing, repair and replacement among its services, and the photos below show recent hybrid battery work: a pack out of the car in the workshop and the cells on the bench. Testing first shows whether the battery is really the problem and what the options are.
Hybrid batteries run at high voltage, so this is not a job to try at home.
Ask first
Send the make, model, year and what the car is doing on WhatsApp, with a photo of any warning on the dash. If something else is going on, see diagnostics. Mike M on using JRock Autos instead of a main dealer: saved me a lot of money
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What customers say
Jay is my normal mechanic- always looks after all problems with my car nothing bad to say very genuine as well 5 star always
Word for word from Google. More reviews on the homepage
What we do
Essex, Kent and London
Bring the car to the workshop in Rochford, or if it cannot come to us, recovery or mobile work. Covering Essex, Kent and London.
Near the workshop:
Elsewhere in Essex, Kent or London? Call or WhatsApp 07507 629559. Back to the homepage
Tell us what’s up with the car
07507 629559Call, or fill in the form and it opens WhatsApp with your message ready to send.
- Unit 34, Three Bays Farm, Canewdon Rd, Rochford SS4 3JN
- Jrock-Autos-services@hotmail.com
