- The four cars
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100 1953–56, 2,660cc four, 14,634 built · 100-Six 1956–59, 2,639cc six · 3000 1959–67, 2,912cc six · Sprite 1958–71, A-series, four marks.
- Brakes, the whole range
- 100 (BN1, BN2): Girling 11in drums all round. 100-Six: drums all round — there is no disc-braked 100-Six. 3000: front discs from launch, July 1959, rear drums always; servo standard on the BJ8. Sprite: 7in drums all round until October 1962, then 8.25in Lockheed front discs with 7in rear drums.
- Body codes, big cars
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BN = two-seater · BT = 2+2 · BJ = convertible. BN7 and BT7 each exist in both Mk I and Mk II form, so the code alone does not give you the mark. BJ7 is the Mk II convertible; BJ8 is the only Mk III code and there is no two-seat Mk III.
- Engines
- 2,660cc Austin A90 four (87.3 × 111.1mm) · 2,639cc BMC C-series six, four main bearings · 2,912cc C-series six · A-series 948, 1,098 then 1,275cc in the Sprite.
- Built where
- First 20 cars at Warwick · Longbridge from spring 1953 · big cars to Abingdon late 1957 · all big-Healey bodies by Jensen Motors, West Bromwich · 100S hand-built at Warwick.
- Sprite and MG Midget
- From June 1961 the Midget is a badge-engineered Sprite. Grille, badging, trim, instruments and brightwork differ; everything mechanical is the same, mark for mark. The 1500 Midget of 1975 on shares nothing with any Sprite — no Sprite ever had a 1493cc Triumph engine or a rubber bumper.
- Electrics
- 12 volt throughout. Earth polarity varies and plenty of cars have been converted — check yours before ordering a tachometer, coil, radio, dynamo or voltage stabiliser. One specialist source puts the positive-to-negative change inside 1275cc Spridget production, around late 1967.
- Why it ended
- The 3000 could not meet coming US safety and emissions rules, and 91.5 per cent of 3000s were exported, mostly to North America. Last 3000 December 1967; badge gone from the Sprite in 1970; the Healey agreement itself ran to 1972.
- Here
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No New Zealand Austin-Healey or Sprite assembly is documented — the BMC plants here built volume saloons. Sprites were assembled from CKD kits in Australia at Pressed Metal Corporation, Enfield NSW, from 1959, using local Mk 2A and Mk 3A designations that do not match British usage. Many New Zealand cars are ex-North-American left-hand-drive imports, so check which yours is before ordering anything handed.