Worse fuel economy
The petrol engine runs more often to cover for the battery, so your mpg drops without the way you drive having changed.
Our speciality
Hybrid battery repair in Milton Keynes
A hybrid battery warning does not always mean a new battery. We diagnose the pack properly at our Bletchley workshop, and repair it where repairing is the right answer.
Signs your hybrid battery is struggling
Hybrid packs rarely fail overnight. They fade, and the car compensates — which is why the fuel economy usually goes before the warning light does.
The engine rarely switches off
Less time in electric-only mode, and the engine kicking in almost as soon as you pull away.
The charge gauge swings wildly
State of charge jumping from full to low and back again, rather than sitting in the middle.
Warning lights
The hybrid system warning light, the check engine light, or a red triangle on the dash.
Less pull when accelerating
The car feels flat joining a dual carriageway, because the electric motor is contributing less.
The cooling fan runs loudly
The battery cooling fan working hard, often because its filter is clogged with dust.
Noticing any of these? Send us a message describing what the car is doing and we will tell you whether it is worth bringing in.
How we approach a hybrid battery
Health check and diagnostics
We read the hybrid system data and check the battery at module level, so we can see which part of the pack is actually weak rather than guessing from the warning light.
Repair where we can
A failing pack often comes down to a small number of weak modules, or a cooling fault that starved the pack of air. Fixing that costs far less than replacing everything.
Replace when we should
When a pack is genuinely at the end of its life, we will say so and quote for replacement — with genuine parts and a warranty.
Hybrid system servicing
Inverter coolant, cooling fan and filter, and the rest of the hybrid system — the maintenance that helps the next pack last longer.
Hybrids we work on
Toyota and Lexus hybrids are our bread and butter, but we take on other makes too. If yours is not listed, ask — the answer is usually yes.
- Toyota Prius, Prius+ and Prius Plug-in
- Toyota Auris, Yaris, C-HR, Corolla and RAV4 hybrids
- Lexus CT 200h, IS 300h, NX and RX
- Honda Insight, Jazz and Civic IMA
Genuine parts and warranty
Whatever we fit is a genuine part, and our work is covered by a warranty. We will show you what we found and explain the options before anything is replaced.
Hybrid battery questions we get asked a lot
- How long do hybrid batteries last?
- There's no fixed lifespan — well-maintained packs commonly outlast the rest of the car, but performance fades gradually as cells age. That's why symptoms like reduced fuel economy or the engine running more often usually show up long before a total failure.
- Can a hybrid battery be repaired instead of replaced?
- Often, yes. A failing pack usually comes down to a small number of weak modules or a cooling fault, and fixing that costs far less than replacing the whole pack. We'll diagnose it properly rather than assuming it needs a full replacement.
- Do you work on my hybrid model?
- Toyota and Lexus hybrids are our speciality, and we cover Honda hybrids too. If your model isn't listed above, ask — the answer is usually yes.
- How much does a hybrid battery repair or replacement cost?
- It depends on the vehicle and whether the pack needs repairing or replacing. Message us your registration and what the car is doing on WhatsApp and we will give you a quote.
Get your hybrid battery checked
Workshop open Monday to Saturday with same-day bookings, on Tavistock Street in Bletchley. Tell us what the car is doing and we will take it from there.
Message us on WhatsApp (opens WhatsApp)Or see everything else we do.