Used sedan · 2018
2018 BMW 3 Series 330i Used Prices & AI Forecast
Live market data and proprietary AI-powered price forecasting for the 2018 BMW 3 Series 330i. Updated weekly from thousands of active listings.
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Current median price
$15,995
332 active listings
8-week forecast
$16,137
AI-predicted median
Expected change
+0.9%
vs. today
Confidence
55%
forecast confidence
Median days on market
183 days
last 90 days, n=769 listings
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Market context
Used-car market benchmarksHow 2018 BMW 3 Series is tracking: CarCast forecasts a +0.9% move over the next 8 weeks. The broader used-car market is up 3.6% year-over-year (MUVVI) and down 1.8% on the consumer price index.
2018 BMW 3 Series price history
Last 26 weeksMedian asking prices aggregated weekly from active dealer and auction listings.
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2018 BMW 3 Series price forecast
Next 8 weeks| Week ending | Low (P10) | Expected (P50) | High (P90) |
|---|---|---|---|
| Aug 6, 2026 | $13,180 | $15,976 | $18,934 |
| Aug 13, 2026 | $12,755 | $15,793 | $18,992 |
| Aug 20, 2026 | $13,075 | $16,241 | $19,634 |
| Aug 27, 2026 | $12,689 | $15,965 | $19,429 |
| Sep 3, 2026 | $12,593 | $15,943 | $19,454 |
| Sep 10, 2026 | $12,642 | $16,032 | $19,621 |
| Sep 17, 2026 | $12,806 | $16,296 | $19,986 |
| Sep 24, 2026 | $12,584 | $16,137 | $19,899 |
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See 60-Day Forecast →What the price trend shows for the 2018 BMW 3 Series
Our model expects prices to stay roughly flat over the forecast window.
CarCast's AI-powered forecasting combines live listing prices, historical trends, regional economic indicators, and search-interest data to project where used car prices are heading. Informational analytics only — not financial advice.
Forecasts and trend classifications are informational analytics only and do not constitute financial advice or a recommendation to purchase, hold, or sell any vehicle. Individual market conditions vary.
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