The average life of a windshield wiper blade is typically between 6 to 12 months, depending on various factors such as the quality of the blade, weather conditions, and how frequently the wipers are used.

In regions with extreme weather conditions (either very hot or very cold), the lifespan might be on the shorter side. Regular maintenance, such as cleaning the blades and ensuring they aren’t used on a dry windshield, can help extend their life. If you notice streaking, squeaking, or reduced visibility, it’s usually a sign that the wipers need to be replaced.

While it’s technically possible for wiper blades to last 5 years, it’s quite rare and not generally recommended. Most wiper blades are designed for a much shorter lifespan, typically 6 to 12 months, as I mentioned earlier. Over time, the rubber on the blades tends to degrade due to exposure to sunlight, heat, cold, and environmental contaminants, leading to reduced performance.

If wiper blades are well-maintained, used infrequently in mild climates, and the vehicle is kept in a garage, they might last longer than average. However, after 2-3 years, even under the best conditions, the rubber is likely to have degraded to a point where they won’t perform as effectively as new blades.

For safety reasons, it’s generally advisable to replace wiper blades more regularly to ensure clear visibility in all weather conditions.

Expensive windshield wipers often last longer than cheaper ones, but the difference isn’t always as significant as one might expect. Here’s why:

1. Material Quality: Higher-end wipers are typically made from better materials, such as premium rubber or silicone, which are more resistant to wear, UV damage, and environmental factors. This can extend the life of the wiper blades compared to cheaper options made from lower-quality rubber.
2. Design and Engineering: Expensive wipers may have more advanced designs that provide better contact with the windshield, leading to more efficient cleaning and potentially reducing wear. Some high-end wipers also have features like aerodynamic designs to prevent lift-off at high speeds.
3. Brand and Durability: Reputable brands often invest in research and development to produce wipers that last longer and perform better. However, the longevity still depends on usage conditions, such as weather and frequency of use.
4. Maintenance: Regardless of price, how well you maintain your wipers plays a significant role in their lifespan. Regular cleaning and avoiding using them on a dry windshield can help even cheaper wipers last longer.

While more expensive wipers may last longer and perform better, the difference may not justify the cost for everyone. The longevity and effectiveness of any wiper blade will ultimately depend on factors like climate, driving conditions, and maintenance practices.