Toyota Aygo Battery: Specs, Fitment & Common Faults

On the Aygo, a battery that keeps going flat despite testing healthy genuinely points toward a parasitic drain, not necessarily the battery itself.

Illustration for editorial purposes

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OEM Part Number: 000915105AB

Genuinely useful to know: the Aygo shares its platform and much of its engineering with the Citroën C1 and Peugeot 107 (and later the C1/108) — batteries are genuinely interchangeable across all three, expanding your options if the exact Aygo listing isn't in stock.

Mk1 (2005-2014), standard fitment (shared with C1, 107)	175-207mm case, no Start/Stop on the simplest versions, so no AGM/EFB requirement
Genuine cross-reference numbers	000915105AB, 000915105DB, 000915105DC, 000915105DP
Mk2 (2014 onwards), Start/Stop variants	EFB technology required — confirm your exact trim before ordering

A Genuinely Useful Distinction Worth Knowing Before Blaming the Battery — Toyota Aygo Battery

A flat battery on a conventional petrol or diesel Toyota is genuinely often a symptom rather than the root cause — a battery that keeps going flat despite being tested as healthy points toward a parasitic drain somewhere in the electrical system, rather than the battery itself being at fault. Before replacing the battery on a hunch, it's genuinely worth having a proper drain test done, since replacing a battery that wasn't actually the problem just delays finding the real cause.

Worth knowing about extended periods of standing: Toyota's official guidance for any car sitting unused for an extended period, hybrid or otherwise, includes periodic use or a trickle charger to avoid a flat battery — genuinely worth doing on a car that sits for more than a couple of weeks at a time, particularly in colder weather when battery capacity is naturally reduced.

It's also worth knowing that modern cars, including older conventional Toyota models, carry more permanently-live electrical draw than owners often expect — alarm systems, clock memory, and various modules all draw a small amount of current even with the ignition off, meaning a battery in genuinely marginal health can go flat from ordinary standing that wouldn't have affected a healthier battery.

Toyota Aygo Battery: The Part Everyone Blames First, Not Always Correctly

On the Toyota Aygo, the battery takes the blame for most no-start situations, and often rightly so — it's a sensible first check. But it isn't always the genuine cause, which is worth establishing before paying for a new one that turns out not to solve anything.

Before you buy: battery size, capacity and type (standard vs AGM/EFB for stop-start systems) vary by trim and engine. Always confirm against your VIN before ordering.

Toyota Aygo Battery: What It Does

The Toyota Aygo's 12V battery handles engine starts and keeps electrical systems running whenever the engine isn't. On stop-start versions, that job gets much harder, since the engine switches off and restarts constantly — which is why it specifically needs an AGM or EFB battery, not a standard one.

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Toyota Aygo Battery: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Battery Guide for warning signs to watch for, confirming fitment against your VIN, and matching the right technology (standard, EFB, AGM) when buying aftermarket.

More Toyota Battery

The same part, covered across other Toyota models.