
Austin-Healey 100 100M
1955 to 1956 · Roadster · Limited edition · 1,159 built
Over the past 12 months, 6 have sold publicly at a median of $92,050. The Shifty Estimate for a well-kept example is $108,800. Across the sales we have on file, prices ran from $27,750 to $196,000, depending on mileage, color, and history.
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- Median · 12 mo
- $92,050
- Sales · 12 mo
- 6
- Market cap
- $126.1M · 1,159 built
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Sold $99,100

Sold $85,000

Sold $27,750

Sold $165,100

Sold $86,500
Specifications
- Engine
- I4, 2.7L
- Power
- 110 hp
- Torque
- 156 lb-ft
- 0 to 60
- 9.8 s
- Top speed
- 109 mph
- Transmission
- Manual
- Drivetrain
- RWD
- Curb weight
- 2,150 lb
- Production
- 1,159 built
Common questions
How much does a Austin-Healey 100 100M cost?
Over the past 12 months, 6 have sold publicly at a median of $92,050. The Shifty Estimate for a well-kept example is $108,800. Across the sales we have on file, prices ran from $27,750 to $196,000, depending on mileage, color, and history.
What is a 1955 Austin-Healey 100 100M worth today?
The Shifty Estimate is $108,800. That sits above the $92,050 median of actual sales because the median counts every car that sold, including high-mileage examples, while the estimate describes a clean, low-mileage one bought today. We rate confidence medium: 6 public sales in a year is a thin market, and the spread between them is wide.
How many Austin-Healey 100 100M have sold?
Shifty has 23 public sales of the Austin-Healey 100 100M on file. The earliest was on Aug 16, 2019.
What is the most expensive Austin-Healey 100 100M sold?
The highest public sale on file is $196,000, on Mar 2, 2023.
What has a Austin-Healey 100 100M sold for at auction?
The 3 most recent public sales we have on file:
- $125,000Apr 12, 2026Ivory White · 50 mi
- $103,600Mar 5, 2026
- $77,550Feb 6, 2026Two-tone red and black · 92,000 mi
About the 1955 Austin-Healey 100 100M
The 100M transformed Healey's sports car into a genuine performance machine, with factory modifications including a cold-air box, larger carburetors, and higher compression ratio boosting output to 110 horsepower. Only 1,159 examples received the Le Mans modification package, making the 100M significantly rarer than the standard car. The distinctive louvered bonnet, leather bonnet strap, and competition-style wire wheels announced its sporting intentions, while the improved four-speed transmission enhanced drivability. Built during 1955-1956, the 100M bridged the gap between the standard car and the ultra-rare 100S, offering enhanced performance with reasonable accessibility. The Le Mans connection adds motorsport cachet, as these modifications were inspired by the factory's racing program. Today, genuine 100M examples command strong premiums over standard cars, with collectors appreciating their perfect balance of performance, rarity, and period racing heritage.
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