Ford Fiesta Battery Size (And Best Type?)

The Ford Fiesta is one of the UK’s top selling cars, and has been for some time.

You’re probably here because you have one and need a new battery for it?

So we’ll tell you the Ford Fiesta battery size, and the simplest way to check that for your car so we can be 100% sure.

And we’ll analyse the best battery for Ford Fiesta, and give you the best advice on how to choose which type.

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Ford Fiesta Battery Size & Best Type

Introducing Ford Fiesta Battery Size

So let’s get right onto it!

Ford Fiesta (petrol) battery dimensions

In general, the Ford Fiesta battery size for a petrol-engined car is the 063 battery dimensions. Those are:

210L x 175W x 175H (mm)

Or otherwise expressed:

Length: 210mm

Width: 175mm

Height: 175mm

Ford Fiesta (diesel) battery dimensions

Ford Fiesta battery dimensions for diesel-engined cars is usually a little larger as they tend to need higher cranking power.

So the battery size for diesel-engined cars is the 075 battery dimensions. Those are:

242L x 175W x 175H (mm)

Or otherwise expressed:

Length: 242mm

Width: 175mm

Height: 175mm

How to check the Ford Fiesta battery size?

In other words, how to be sure of the battery size you need for your specific generation Ford Fiesta?

There’s a super simple way to check.

  1. Go to this ebay battery finder.
  2. Click the Blue button that says “Select Vehicle”, and enter your registration number.
  3. Their database will bring up all the car batteries that fit your specific vehicle.

Note: You can also click “Vehicle Details” and enter your Make, Model, Engine, Year and Fuel type if you’d prefer not to enter your licence plate number.

Most likely it’ll be the 063 battery type for petrol cars and the 075 battery type (see this Lion 075 car battery review) for diesel cars. Whatever type you see, these are the batteries that will fit your car.

If there are type other than 063 dimensions that come up from this search, then no problem, these are alternatives batteries that will also fit your car.

Best Battery For Ford Fiesta

While it’s hard to answer that question since different Ford Fiestas need different sizes of battery, we can help you to choose.

Best Battery Brands for Ford Fiesta

We recommend a range of brands which cover the lowest possible price to the best quality battery, of commensurate price.

Those brands are:

  • Lion
  • Exide
  • Bosch
  • Varta

Those are the brands that we’ve found to be the best on the market.

Lion batteries are some of the cheapest on the market, but they still have good quality and we’ve found plenty of people who’ve got 5 or 6 years out of Lion batteries. Which is more than may have been expected, given the price.

Exide are a good mid-range battery. Higher in price than Lion batteries but they do represent a step up in quality. They’re likely to last longer and keep their power for longer too.

Bosch and Varta prices are higher. These are the two best car battery brands on the market, and are really solid and even exceptional performers. They’re highly likely to last at least 5 years, and you’ll often get a 5 year guarantee to back that up. Power performance is better, reliability is better and they’ll hold on to that power for longer than the lower cost batteries.

How long can you expect car batteries to last in the UK?

So we recommend the best battery type for your Ford Fiesta to be whichever of the brands above represents the best investment for you. All will deliver, relatively speaking

Best Battery Types For Ford Fiesta

There are three main types of car battery that can be used with a Ford Fiesta:

  • Traditional Flooded/Wet
  • EFB
  • AGM

Flooded/Wet batteries are the standard lead-acid battery, the type that most cars use.

They’re solid, they’ve been doing their job for decades now and for most people this battery type will do them just fine.

They do have some weaknesses that make them ill suited for the way most drivers use their vehicle.

What lead acid batteries want is:

  1. They want to be fully charged, either with a) long journeys, charging them via the alternator, or b) with a car battery charger, ideally a smart charger like the NOCO Genius 10 UK or the CTEK MXS 10 (the only kind that can give a full 100% charge).
  2. They want to be discharged only to around 50% and no more beyond that (ie. they want a maximum of only 50% of their charge to be used up)
  3. Immediately after discharge, they should be charged again, and it should be a full charge, up to 100%

How often do you think this happens with most drivers? Yeah, not too much.

The above description of what batteries want is the type of actions that will keep the batteries healthiest and last longest.

If you don’t do these things, lead acid batteries start to suffer from acid stratification and sulfation. Acid stratification is when the electrolyte within the battery becomes poorly mixed. Sulfation is the accumulation of lead sulfate on the battery plates.

Both these afflictions arise when the battery is left in a discharged state. The more this happens, the more these ‘illnesses’ affect your battery until eventually it becomes so severe that the battery stops being able to hold and deliver charge to your car. That’s when a battery fails and dies.

EFB and AGM Batteries

Almost all lead-acid batteries suffer from sulfation and acid stratification but EFB and AGM batteries were engineered and developed to better deal with these challenges, and therefore they both last longer than Flooded/Wet batteries.

EFB batteries have more electrodes and thinner lead plates, which allow for greater power delivery. They also have a polyester scrim which hold the electrolyte (the mixture of sulphuric acid and distilled water) in place in such a way that acid stratification is less likely to occur. Special carbon additives in the plates allow for higher DCA (Dynamic Charge Acceptance), allow them to absorb more charge, and hence deal better with states of partial discharge.

These factors all result in more power, and better ability to resist sulfation and acid stratification. Therefore, they last considerably longer than traditional Flooded batteries, perhaps 20-30% longer.

AGM batteries, meanwhile, completely eliminate acid stratification. That’s because unlike other battery types, which have a free-flowing electrolyte, AGM batteries hold their electrolyte absorbed in fibreglass mats. AGM stands for Absorbed Glass Mat.

AGM batteries, with no free-flowing electrolyte can devote more space to the lead plates and so have higher reaction surface area. What does that mean? It means more starting power, as much as 20% more than the equivalent Flooded battery. That means much more security of a start on cold winter mornings and when the battery is in a discharged state.

This also results in boosted engine rotation, and hence better fuel efficiency.

Higher pack pressure resilience in AGM batteries, mean they lose less active material over time (known as past shedding), and so they lost longer. This resilience also means they handle vibration better, that’s something that Flooded batteries are fairly sensitive to.

As a result, AGM batteries have far higher cyclic durability (ability to handle charge-discharge cycles) than Flooded batteries, even as much as 5 times more cyclic durability.

FYI, AGM battery charging (best AGM chargers) needs are a little different, but as long as you have a smart charger, like NOCO or CTEK charger you’ll be fine.

So as far as the best battery for Ford Fiesta is concerned, we recommend the brands above, and you can make the decision on whether an EFB or AGM battery is worth the additional expense.

Bear in mind that those batteries will last longer and deliver power more reliably over time in your cost/benefit considerations.

We’ve gone more in-depth on EFB vs. AGM batteries, for stop start system, but many of the benefits of EFB and AGM batteries are there regardless of whether you have stop-start functionality or not.

Summing Up Ford Fiesta Battery Size

That’s it then! Now you know the Ford Fiesta battery size.

It’s highly likely to the 063 battery dimensions for a petrol car, and the 075 battery dimensions for a car with diesel engine.

And you can easily to to ebay’s battery finder tool to make 100% sure which battery size you need for your Fiesta, and then choose the battery you want.

As far as your best battery for Ford Fiesta is concerned, we described the best brands to choose from: Lion, Exide, Bosch and Varta. And we showed you the benefits and drawbacks of the various battery types, why EFB and AGM batteries will have longer lifespan and deliver more power and security; albeit at higher price.

Good luck with your Fiesta battery!