Hyundai
Hyundai Battery Replacement Cost & Lifespan Calculator
E-GMP platform delivers efficient 800V packs with strong degradation curves.
Live Estimator
Pack is tracking above average for this mileage.
Comprehensive Guide to Hyundai Battery Costs, Warranty Lifespans, and Degradation Factors
E-GMP platform delivers efficient 800V packs with strong degradation curves. Ioniq 5 and Kona EV owners benefit from one of the longest warranties in the industry (10 yr / 100k mi on the battery for original owners).
How Hyundai Battery Warranties Work
Hyundai provides a 10-year / 100,000-mile battery warranty on new vehicles. This coverage guarantees the battery will retain at least 70% of its original capacity over the warranty term — and any pack that falls below that threshold qualifies for free repair or replacement at an authorized service center.
In the UK, EV manufacturers typically offer an 8-year / 100,000-mile battery warranty, with Hyundai, Kia and MG extending to 7–10 years. The Consumer Rights Act 2015 also gives buyers up to six years to claim against faults present at purchase, providing extra protection beyond the manufacturer warranty.
What Drives Battery Degradation
Three factors dominate long-term capacity loss: calendar age, cumulative mileage, and thermal stress. Hot-climate ownership (sustained ambient above 95°F (35°C)) accelerates chemistry breakdown by roughly 35% versus moderate climates, while cold climates cause only a mild 10% increase in long-term loss. Fast charging, contrary to popular belief, has negligible effect on modern liquid-cooled packs when used moderately.
When Replacement Makes Sense
Most owners begin considering replacement when State of Health drops below 70%, which usually correlates with a noticeable loss of usable range. At that point, the cost-of-replacement vs. cost-of-trade-in calculation becomes the deciding factor — and it varies dramatically by model, with mainstream packs running £9,500–£13,500 and premium platforms exceeding £17,500.