What kind of battery does a Ford Fiesta have?

In most Fiats—sorry, Ford Fiests—the vehicle relies on a traditional 12‑volt starting battery to power the engine, lighting, and electronics. In some European markets and on newer mild-hybrid variants, Ford also uses a 48‑volt battery as part of a hybrid system. This article explains what you’re likely to find in a Fiesta’s battery setup, how it’s used, and what to check when replacing or diagnosing electrical issues.

The Ford Fiesta’s battery setup varies by model year and market. While the standard 12‑volt battery remains the backbone for starting and running the car’s low‑voltage systems, certain trims and regions have adopted a mild-hybrid 48‑volt system to improve efficiency. The details below cover both configurations and what they mean for owners and mechanics.

12-volt starting battery: the workhorse for most Fiests

Before listing the typical characteristics, here is what you should know about the conventional 12‑volt battery used in most Fiesta models.

• Type: A traditional 12‑volt battery, commonly a lead‑acid unit. Higher‑end trims may use an absorbed glass mat (AGM) variant for better vibration resistance and longevity.


• Role: Powers the starter motor, ignition system, ECU/ECM, lighting, infotainment, and other standard electrical loads when the engine is off or idling.


• Location: Usually mounted in the engine bay within easy reach for replacement.


• Replacement considerations: When replacing, use the correct cold-cranking amps (CCA) rating and size recommended for your exact Fiesta model and market; regular maintenance (clean terminals, proper tightening) helps longevity.


• Typical lifespan: Approximately 3–5 years under normal driving conditions; actual life varies with climate, driving style, and electrical loads.

In summary, for the majority of Ford Fiests, you’re looking at a standard 12‑volt battery handling the day‑to‑day electrical duties.

48-volt mild-hybrid option: an added layer in select markets

Before the list, note that the 48‑volt system is not present in every Fiesta. It appears on certain European-market variants equipped with a mild‑hybrid setup to boost efficiency and idle‑stop performance.

• Battery type: A 48‑volt high‑voltage battery, typically lithium‑ion, integrated into Ford’s mild‑hybrid system.


• Role: Supports the belt‑driven starter/generator (BISG), enables smoother start‑stop operations, and can provide brief electrical assist to reduce fuel use.


• Interaction with 12V: The 48V system works alongside the standard 12V battery, which continues to power conventional low‑voltage loads.


• Location and installation: Installed in the engine bay as part of the hybrid hardware; wiring and components interface with the BISG and the 48V battery pack.


• Availability: Not all Fiesta models or markets offer the 48V option; availability depends on engine choice and regional specifications.

For owners of the 48‑volt‑equipped Fiesta, the car effectively has two battery systems: a conventional 12‑volt battery for standard systems and a separate 48‑volt battery for the mild‑hybrid functions.

How to identify which battery your Fiesta has

When you’re unsure which setup applies to your car, these quick checks can help you confirm the configuration.

• Look for labels: A 12‑volt battery will be marked with 12V and CCA/Cold Cranking Amps; a 48‑volt system will reference 48V on the high‑voltage battery pack.


• Check the engine bay components: If you see a belt-driven starter/generator and an additional high‑voltage battery wiring harness, your car likely has a 48V mild‑hybrid system.


• Consult documentation: The vehicle’s owner manual or Ford’s official spec sheets for your exact market and VIN will specify whether a 48V MHEV system is present.

Knowing the configuration helps with maintenance, battery replacement planning, and diagnostic steps if you experience electrical issues.

Summary

Across most Ford Fiesta models, a standard 12‑volt lead‑acid (often AGM) battery handles starting and low‑voltage systems. In select European markets and on certain trims, a 48‑volt mild‑hybrid system adds a second battery to support the BISG and efficiency gains. If you’re unsure which setup your Fiesta has, check the battery labels or consult the vehicle’s documentation or a Ford dealer. This dual‑system arrangement—where present—meaningfully impacts replacement choices and service procedures.

Bottom line

The typical Fiesta uses a 12‑volt battery, with some markets offering an optional 48‑volt mild‑hybrid system on specific engines and trims. Always verify your exact model’s spec to choose the correct battery type and replacement procedure.

What kind of battery does a 2016 Ford Fiesta take?

Duralast Gold Group Size 96R Battery 96R-DLG.

How much is a battery for a 2019 Ford Fiesta?

Affordable Prices and Wide Selection
But with Advance Auto Parts, you can find high-quality Batteries and Chargers for your 2019 Ford Fiesta at great prices. Our Batteries and Chargers inventory for this model ranges from just $229.99 to $335.99, with an average price of $282.99.

What size battery for Ford Fiesta?

The battery size for a Ford Fiesta varies by model year and engine, but common sizes include Group Size 96R for many gasoline models and Group Size 42, 063, or 075 for smaller petrol and diesel engines, respectively. You should always verify the exact size by checking your car's manual or using an online battery finder with your specific model information. 
Common battery sizes

• Group Size 96R: This is a very common size for many recent Ford Fiesta models, particularly those with gasoline engines. 
• Group Size 42: Another option that may fit certain Fiesta models. 
• Group Size 063: A popular battery type for smaller petrol engine versions, especially in the UK. 
• Group Size 075: Often required for diesel models or some larger petrol engines, as they need higher cranking power. 
• Other sizes: Some models might use other sizes like Group Size 90 or 58R, depending on the engine and specifications. 

Factors to consider when choosing a battery

• Engine type: Diesel models typically need batteries with a higher Cold Cranking Amps (CCA) rating than petrol models. 
• Model year: Battery sizes and specifications have changed over the years, so checking your car's specific year is crucial. 
• Power needs: A battery with higher CCA than the original is acceptable and can provide better starting power. 
• Terminal location: Ensure the new battery has the correct terminal layout to fit your car's cables. 

How to find the right battery

1. Check your owner's manual: This is the most reliable source for the correct battery specifications. 
2. Use an online battery finder: Websites for auto parts stores have tools where you can input your car's year, make, and model to see compatible options. 
3. Consult a professional: If you are unsure, ask a technician at an auto parts store or a mechanic to help you find the right battery. 

How much would a new battery cost for a Ford Fiesta?

The cost for a Ford Fiesta Battery Replacement is typically between £66 and £243.