Science

The psychology of why we overpay for used cars—study points to left-digit bias

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 23/10/2026, 20:55:25 UTC.

Briefings

A 2026 study suggests consumers consistently ignore tax details and fail to process exact numbers during car purchases, driven by a left-digit bias. This behavior leads to overpaying for used vehicles, with evidence indicating people overlook price components and skip precise calculations.

Key points

• Consumers routinely ignore tax information attached to vehicle prices.
• People fail to process exact numbers with any precision during purchases.

Context

This research highlights a psychological tendency where individuals overlook critical financial details like taxes and exact figures, leading to higher costs for used cars.

Limitations

Evidence is limited to general observations of consumer behavior without specific data on tax rates, vehicle prices, or individual purchase outcomes.

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