§ V.01What a 1965–1974 Buick Gran Sport is worth
A 1965–1974 Buick Gran Sport sold for a median of $40,000 across 123 completed auctions from January 2016 to October 2026 (BidBetter, as of 3 November 2026).
The middle half of those 123 sales fell between $29,850 and $67,550 (the typical range), and the full range after cleaning was $11,500 to $203,500.
Data as of 3 November 2026 · 123 sales · January 2016 to 8 October 2026 · auction results only
§ V.02What moves a car within the band
Within that band, convertible cars are the most frequently traded body style in this set (57 of 123 sales), and automatic cars account for 81 of them. Condition, originality and documented history move a car further than any single specification, which is why the middle half of the range is wide.
The spread by variant, printed in full above, is usually wider than the spread by year: a coupe at $46,885 and a convertible at $39,250 are not the same market, and a single median that mixes them describes neither.
§ V.03Recent sales
| Car | Sold for | Date | Mileage | Sold by |
|---|---|---|---|---|
| 1970 Buick GS 455 Coupe | $31,250 | 8 October 2026 | 21,000 mi | Bring a Trailer |
| 1970 Buick Gran Sport Stage 1 Convertible | $145,600 | 8 October 2026 | — | RM Sotheby's |
| 1970 Buick GS 455 Convertible | $23,250 | 11 September 2026 | 41,000 mi | Bring a Trailer |
| 1967 BUICK GS340 | $17,600 | 10 September 2026 | — | Barrett-Jackson |
| 1972 Buick GS 455 Stage 1 Coupe | $61,500 | 31 August 2026 | 60,000 mi | Bring a Trailer |
| 1969 Buick GS 400 Convertible | $46,200 | 24 July 2026 | — | Mecum |
| 1968 Buick GS 400 Sport Coupe | $31,000 | 1 July 2026 | 41,000 mi | Bring a Trailer |
| 1969 BUICK GS400 STAGE 1 | $80,300 | 27 June 2026 | — | Barrett-Jackson |
| 1970 Buick GS 455 Coupe | $39,100 | 25 June 2026 | 49,000 mi | Bring a Trailer |
| 1968 Buick GS 400 Convertible Project | $11,500 | 19 June 2026 | 96,000 mi | Bring a Trailer |
| 1970 Buick GSX Stage 1 | $90,200 | 15 May 2026 | — | Mecum |
| 1970 Buick GS Stage 1 Convertible | $67,100 | 15 May 2026 | — | Mecum |
| 1968 Buick GS | $37,400 | 15 May 2026 | — | Mecum |
| 1970 Buick GS Stage 1 | $77,000 | 14 May 2026 | — | Mecum |
| 1972 Buick GS | $23,100 | 9 May 2026 | — | Mecum |
§ V.04Price by model year
| Model year | Median | Sales |
|---|---|---|
| 1966 | $35,200 | 3 |
| 1967 | $37,125 | 14 |
| 1968 | $28,600 | 19 |
| 1969 | $42,000 | 20 |
| 1970 | $79,200 | 38 |
| 1971 | $33,000 | 9 |
| 1972 | $49,500 | 18 |
§ V.05Price by body style and transmission
| Variant | Type | Median | Sales |
|---|---|---|---|
| Convertible | Body style | $39,250 | 57 |
| Coupe | Body style | $46,885 | 44 |
| Automatic | Transmission | $37,400 | 81 |
| Manual | Transmission | $45,975 | 30 |
§ V.06Questions
What is a 1965–1974 Buick Gran Sport worth?
A 1965–1974 Buick Gran Sport sold for a median of $40,000 across 123 completed auctions from January 2016 to October 2026 (BidBetter, as of 3 November 2026).
The middle half of those 123 sales fell between $29,850 and $67,550 (the typical range), and the full range after cleaning was $11,500 to $203,500.
What affects the price of a 1965–1974 Buick Gran Sport?
Model year: by year, medians run from $28,600 for 1968 (19 sales) to $79,200 for 1970 (38 sales).
Body style: a coupe holds a median of $46,885 on 44 sales, against $39,250 on 57 for a convertible.
Transmission: Manuals hold a median of $45,975 on 30 sales, against $37,400 on 81 for automatics.
Condition, originality and documented history move a car further than any single specification, which is why the middle half of sales spans $29,850 to $67,550.
Is the Buick Gran Sport 1965-1974 going up or down in value?
Up. The 23 sales in the 12 months to 3 November 2026 had a median of $42,900, against $31,625 on 14 sales in the 12 months before, a rise of 35.7%. That compares whichever cars came to auction in each year, not the same cars sold twice, so read it as the direction of the market rather than a rate of appreciation.
How many Buick Gran Sport sales is that based on?
123 completed auction sales, from January 2016 to 8 October 2026. The table above lists the 15 most recent, each linked to its auction record. The figures were last rebuilt on 3 November 2026.
What is the difference between the typical range and the full range?
The typical range is $29,850 to $67,550: half of all 123 sales fell inside it. The full range is $11,500 to $203,500, the cheapest and dearest sale that survived cleaning. The full range is set by outliers, so it is a boundary rather than a guide to what most cars bring.
Which body style holds its value best?
On this set, convertible is the most frequently sold at 57 sales with a median of $39,250. The highest median among body styles is coupe at $46,885, though it rests on fewer sales. Each variant's median and count are in the table above.
Do manual or automatic cars sell for more?
In this set, automatic cars account for 81 of 123 sales. Manuals hold a median of $45,975 on 30 sales, against $37,400 on 81 for automatics.
Does mileage change the value?
Mileage is recorded for part of this set, not all of it, so it is not used to adjust the median. It is shown in the sales table wherever the auction record carries it, and you can see the effect directly by comparing rows.
How current is this figure?
Data as of . The figures are rebuilt from completed sales on a schedule, and the date above is the date of the last rebuild, not the date this page was loaded.
§ V.07Method and sources
What these figures are. Every number on this page is computed from completed auction sales of Buick Gran Sport cars built between 1965 and 1974. The median is the 50th percentile of the sale prices; the typical range is the 25th to 75th percentile; the full range is the lowest and highest sale that survived cleaning. Percentiles are linearly interpolated on the sorted prices.
What is excluded. Asking prices, reserve-not-met results, withdrawn lots and unsold cars are not prices and are not counted. Parts, memorabilia, literature, scale models and other non-vehicle lots are excluded. Sales not made in US dollars are excluded, so these figures describe the dollar market. Duplicate records are removed. Sales below a plausibility floor (5% of the median) and above a ceiling (10× the median) are set aside, because a $22 "911" is a data error rather than a cheap car.
What it is not. This is not an appraisal or an inspection, and it does not predict what any particular car will bring. Two cars built the same year can differ by more than the whole typical range on condition, originality, documentation and provenance.
The set. 123 sales from January 2016 to 8 October 2026, drawn from 8 auction sources, principally Barrett-Jackson (49), Bring a Trailer (46), Hemmings (9), Hagerty (7), Mecum (6), RM Sotheby's (4), Acc (1), Bonhams (1). Data as of .
See the disclaimer for the limits of a valuation of this kind.
§ V.08Compare with
- Buick Grand National and GNX 1982-1987 — $44,000 median · 145 sales · as of 3 November 2026
- Buick Riviera 1963-1973 — $30,900 median · 236 sales · as of 3 November 2026
- Jaguar XK8 1997-2006 — $8,500 median · 124 sales · as of 3 November 2026
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