The 1978 Triumph Bonneville has a median recorded auction sale price of $8,000 USD, with observed prices from $8,000 to $8,000 across 1 year-specific sale in the last 12 months. This small sample is a reference, not a reliable estimate of the wider market.
Price reference
Completed 1978 Triumph Bonneville sales in USD from the trailing 12 months. Unsold bids are excluded from these statistics.
Observed sold results: through .
$8,000
lowest USD sale
$8,000
highest USD sale
1
auction sales
1978
model year
1 auction sale
Completed sales, not listing estimates
Updated every 15 minutes
Yesterday's auction activity available today
Nineteen sources
BaT, Cars & Bids, Mecum, Bonhams, SOMO, and more
Using these results
Compare the same model year, trim, body style, transmission, mileage, and documented condition. Open the original auction listing to check originality, modifications, and provenance. An unsold bid is not a completed sale and does not establish market value.
Prices exclude private-party sales, dealer asking prices, and taxes. Fees are included only when recorded in the source result. The observed range describes these sales; it does not assign condition grades.
Latest displayed auction result: .
Model years
Click a year to see pricing and sales data for that model year.
Latest results
The most recent completed 1978 Triumph Bonneville auctions across all tracked sources.
| Price | Year | Mileage | Auction house | Location | Date | Status | Listing |
|---|---|---|---|---|---|---|---|
| $8,000 | 1978 | 0 mi | Bring a Trailer | Fort Lauderdale, FL | Mar 20, 2026 | Sold | View auction |
| $2,850 | 1978 | 18,000 mi | Bring a Trailer | Vero Beach, FL | Dec 26, 2024 | Sold | View auction |
| $4,250 | 1978 | 12,000 mi | Bring a Trailer | New Lebanon Center, NY | Sep 11, 2024 | Sold | View auction |
| $7,800 | 1978 | 13,000 mi | Bring a Trailer | Surprise, AZ | Jul 20, 2024 | Sold | View auction |
| $6,600 | 1978 | 9,000 mi | Bring a Trailer | Vero Beach, FL | Apr 7, 2023 | Sold | View auction |
| $5,900 | 1978 | 35,000 mi | Bring a Trailer | Ocala, FL | Mar 31, 2023 | Sold | View auction |
| $8,400 | 1978 | 4,000 mi | Bring a Trailer | Novato, CA | Oct 13, 2022 | Sold | View auction |
| $5,000 | 1978 | 15,000 mi | Bring a Trailer | Snohomish, WA | Sep 8, 2021 | Sold | View auction |
| $6,500 | 1978 | 9,000 mi | Bring a Trailer | Safety Harbor, FL | Jun 28, 2021 | Sold | View auction |
| $4,800 | 1978 | 3,000 mi | Bring a Trailer | Raleigh, NC | Jun 17, 2020 | Sold | View auction |
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Reference notes
The 1978 Triumph Bonneville has a median recorded auction sale price of $8,000 USD, with observed prices from $8,000 to $8,000 across 1 year-specific sale in the last 12 months. This small sample is a reference, not a reliable estimate of the wider market.
We have tracked 1 1978 Triumph Bonneville auction sale in USD in the last 12 months.
Old Cars Data aggregates completed results from Bring a Trailer, Cars & Bids, Hemmings, AutoHunter, Hagerty, PCAR Market, All Collector Cars, Gooding & Co, RM Sotheby's, Barrett-Jackson, Sotheby's Motorsport, Car & Classic, The Market, Broad Arrow, MB Market, Mecum Auctions, PistonHeads, Collecting Cars, and Bonhams.
The market data refreshes every 15 minutes as new auction results are collected and normalized.
Condition, mileage, originality, documentation, color, options, provenance, and the specific mix of recent comparable sales can all move values.