Outlander PHEV Battery Replacement Costs in the UK (2024)

The Mitsubishi Outlander PHEV stands as a symbol of eco-friendly driving in the UK, combining electric efficiency with conventional versatility.

However, as time takes its toll on vehicles, the main drive battery may start showing signs of wear and tear. In this guide, we will explore the key aspects and costs associated with Outlander PHEV battery replacement in the UK.

Understanding the Outlander PHEV Battery

The Outlander PHEV is equipped with a high-capacity lithium-ion battery, a crucial component powering its electric motor. Over time, factors such as mileage, charging patterns, and environmental conditions can impact the battery’s performance.

As the vehicle ages, some owners may find themselves considering the replacement of the main drive battery.

Cost Estimates for Outlander PHEV Battery Replacement

One of the primary concerns for Outlander PHEV owners facing battery issues is the cost of replacement. While the exact figures may vary, a rough estimate can provide insight.

Based on industry observations, the cost of a new Outlander PHEV battery in the UK typically falls within the range of £4,000 to £7,000, excluding installation fees.

Factors Influencing Replacement Costs

Several factors contribute to the variation in replacement costs.

These include the model year of the Outlander PHEV, the specific battery capacity, and whether the replacement involves a brand-new battery or refurbished components. Additionally, labor costs for installation play a significant role in the overall expense.

Important: EV battery replacement can cost $1000s. To avoid high-voltage battery replacement, there are some things you can do. Read this article to find out the 10 best ways to maximize EV battery life and save tons of money!

Warranty Coverage

Outlander PHEV owners should be aware of the warranty coverage provided by Mitsubishi.

If the battery capacity falls below a certain threshold within a specified time or mileage limit, the manufacturer may offer a replacement under warranty. Checking the warranty terms and conditions is essential, as this can significantly impact the financial burden on the owner.

Fortunately, Mitsubishi offers standard warranty that covers costs related to the high voltage battery for 8 years or 100,000 miles, whichever comes first.

Also read: EV Battery in Hot Temperature: 5 Things to Know

Exploring Backward Compatibility

A common inquiry among Outlander PHEV owners is whether newer batteries, such as the 2018/19 13.8KWh versions, are backward compatible with older models.

While the forums suggest potential compatibility issues with the Battery Management Unit (BMU), some owners have successfully integrated individual cells from newer packs into older ones.

This, however, requires retaining the old modules and electronics and following a specific process for a successful swap.

Alternative Approaches to Replacement

In the pursuit of cost-effective battery replacement, some owners have explored options beyond purchasing a brand-new battery. There are discussions about rebuilding the battery with new cells, potentially reducing costs compared to a complete replacement.

However, finding service providers offering this option in the UK can be challenging, and the feasibility of such an approach depends on the battery’s overall condition.


Navigating the landscape of Outlander PHEV battery replacement costs in the UK involves considering various factors, from warranty coverage to backward compatibility and alternative approaches.

As with any significant automotive decision, thorough research and consultation with professionals can empower owners to make informed choices that align with their budget and vehicle longevity goals.