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Austin 18/24

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The Austin 18-24 (or 18-24 hp) is a large 5-litre luxury motor-car that was produced by the British manufacturer Austin. Despite the name, its successive engines rated around 30 horsepower for tax purposes and the pundits of the day regarded it as really a 30–40. It was launched in 1907 with the 25-30's 5.3-litre (4+1/2 x) engine and in Austin's catalogue replaced the 15-20, of which only four were made. The next year it used the 15-20's 4.4-litre engine.
In June 1920 The Times referred to it as (Austin's) ". . . famous 18-hp of years ago". The 18-24 was the first big seller for Austin, reaching sales of 1,566 by the end of 1913.
It was in fact replaced for 1914 by the 6.1-litre 30.6 tax horsepower Austin 30 hp. though the catalogue showed a new 20-hp described by the same pundits with the note "20 hp is a very fair estimate of its ranking".
| [[File:Austin 18-24 Tourer 1911 (15649091625).jpg | thumb | 1911 tourer, car 963, engine 955]] | [[File:Austin 18-24 Tourer 1911 (15706011552).jpg | thumb]] |
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Specification
The 18-24 began with the 32.8 tax horsepower 4-cylinder 5.3-litre engine intended for the 25-30 then the following year it was switched to the same 27.3 tax horsepower 4.4-litre (4+1/8 x) engine as the short-lived 15–20. Finally the engine was enlarged to 30 tax horsepower and 4.8-litres (4+3/8 x) for 1911.
Tax ratings 32.8 hp, 27.3 hp, 30 hp.
There was a choice of wheelbase:
- 5.3-litres 1907: 10 ft
- 4.4-litres 1908-1909: 9 ft or 10 ft
- 4.8-litres 1911-1913: 9 ft or 10 ft
The short wheel-base was sold as a two-seater Ranelagh (with dicky seat).
Repute

The Motoring Correspondent of The Times wrote in June 1914:
References
References
- The Austin Car. ''The Times'', Tuesday, Jun 02, 1914; pg. 13; Issue 40539
- David Culshaw, Peter Horrobin, ''The Complete Catalogue of British Cars 1895-1975'', Veloce Publishing, Dorchester UK, 1974 {{ISBN. 9781874105930
- Massed Motor-Car Production. ''The Times'', Saturday, Jun 12, 1920; pg. 11; Issue 42435.
- "Austin: 18-24 h.p.". Grace's Guide.
- [http://www.gracesguide.co.uk/images/7/7b/Im1913Autocar-Austin.jpg Autocar 10 May 1913]
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