Car batteries generally last between 3 to 5 years, with many sources citing an average lifespan around 3 to 4 years for typical petrol and diesel vehicles

. However, this lifespan can vary significantly depending on several factors:

• Climate: Batteries tend to last longer in cooler climates (up to 5 years or more) and shorter in hot climates where heat accelerates battery degradation, often reducing life to about 3 years

. Extreme temperatures, both hot and cold, can negatively impact battery capacity and longevity

• Driving habits and maintenance: Frequent short trips, leaving electrical components on when the engine is off, and poor maintenance can shorten battery life. Proper care, such as regular testing and keeping the battery charged, can extend its lifespan

• Battery type and vehicle: Different vehicles and battery types may affect longevity. Electric vehicle batteries typically last longer, around 8 to 15 years, compared to conventional car batteries

• Storage conditions: Keeping a battery in a garage or shaded area and using a trickle charger can help prolong its life, sometimes up to 10 years in ideal conditions

In summary, while 3 to 5 years is the typical expectancy for a car battery, some can last much longer with proper care and favorable conditions, whereas others may fail sooner due to heat, usage patterns, or maintenance issues

. Regular battery testing every six months or during routine vehicle servicing is recommended to monitor battery health and avoid unexpected failures