Bike Depreciation Calculator
Estimates the current resale value of a bike by accounting for age, annual mileage, and condition. Use it when buying, selling, or insuring a used bicycle to set a fair price.
About this calculator
Like most vehicles, bikes lose value over time through a combination of age-related wear, accumulated mileage, and cosmetic or mechanical condition. The formula applied here is: resaleValue = purchasePrice × 0.85^yearsOwned × (condition / 100) × 0.98^(annualMileage / 10000). The 0.85 base depreciation rate means the bike retains roughly 85% of its value each year, a figure consistent with observed second-hand cycling market trends. The condition multiplier (0–100 scaled to 0–1) directly adjusts the value downward for bikes in poor shape. The mileage factor applies an additional 2% reduction for every 10,000 km ridden annually, reflecting extra drivetrain and frame stress. Multiplied together, these three factors produce a nuanced estimate that outperforms a simple straight-line depreciation model.
How to use
Imagine you purchased a road bike for $2,000 three years ago. You ride 8,000 km per year and rate its condition at 75 out of 100. Plug in: purchasePrice = 2000, yearsOwned = 3, annualMileage = 8000, condition = 75. Calculation: 2000 × 0.85³ × (75/100) × 0.98^(8000/10000) = 2000 × 0.614125 × 0.75 × 0.98^0.8 ≈ 2000 × 0.614125 × 0.75 × 0.9839 ≈ 2000 × 0.4530 ≈ $906. The estimated resale value is approximately $906.
Frequently asked questions
How fast does a bicycle depreciate in value compared to a car?
Bicycles typically depreciate faster than cars in the first year — often losing 15–25% of purchase price — but the rate slows considerably for quality frames that retain collector or performance value. High-end carbon road bikes and niche brands can hold value better than entry-level models. Condition and mileage matter more for bikes than for cars because maintenance history is harder to verify. The calculator's compound depreciation model captures this non-linear drop in value.
What condition score should I give my bike when calculating its resale value?
Rate condition on a 0–100 scale where 100 represents new-in-box, 80–90 means lightly used with minor scuffs, 60–75 covers regular use with visible wear but full functionality, and below 50 indicates significant mechanical or cosmetic issues. Be honest: overestimating condition leads to an inflated resale price that buyers will challenge on inspection. Consider groupset wear, frame scratches, wheel trueness, and brake pad depth when assigning your score. A realistic condition rating is the single biggest lever in the calculator.
Why does annual mileage affect bike resale value beyond just age?
Two bikes of the same age can have dramatically different wear levels if one was ridden 2,000 km per year and the other 15,000 km. High mileage accelerates bearing wear, chain-ring and cassette degradation, cable stretch, and brake track erosion. These components are expensive to replace, so buyers discount high-mileage bikes accordingly. The calculator applies a 2% value reduction per 10,000 km ridden annually to capture this market reality.