Hillman de luxe Utility

Hillman Minx

Company type	Automobile model
Industry	Automotive
Founded	October 1, 1931 (1931-10-01)
Founder	Rootes Group
Headquarters	United Kingdom , UK
Area served	United Kingdom, Australia, Japan, New Zealand, United States (limited)
Products	Mid-sized family cars (saloon, estate, coupé, convertible)
Parent	Rootes Group

Pre-WWII Minx

The Hillman Minx initially debuted on 1 October 1931 as a practical mid-sized family automobile, featuring a pressed-steel body mounted on a separate chassis and powered by a 30 bhp 1185 cc engine with "cushioned power" mounting. In 1934, it was upgraded to include a four-speed gearbox along with a redesigned V-shaped grille. By 1935, the Minx became the pioneer mass-produced vehicle equipped with an all-synchromesh transmission across all forward gears. The design was overseen by Rootes' technical director Captain John Samuel Irving, renowned for his work on Sunbeam aero engines and the Golden Arrow, together with Alfred Herbert Wilde, formerly chief engineer at Standard.

The 1936 model, known as the "Minx Magnificent," introduced a more rounded body design, enhanced chassis rigidity, and repositioned engine to maximize cabin space. The rear panel was slanted, and an optional folding luggage rack was made available. Additionally, an estate version bearing the Commer badge broadened the range.

The last pre-war version from 1938 offered two saloon trims: the entry-level "Safety," which featured rexine upholstery and basic fittings, and the more luxurious "De Luxe," outfitted with leather seats and upgraded comfort amenities. A notable change was the shift to external boot access. The 1939 update brought substantial mechanical improvements—including revisions to the gearbox, differential, half shafts, and steering box—resulting in minimal parts interchangeability with the 1938 model. The grille was also redesigned using pressed alloy.

Throughout these years, the Minx solidified its position as a competitive family car within the British market, laying groundwork for its success after the war.

Wartime Minx

During World War II, British manufacturers focused on producing simple Utility vehicles known as Car, Light Utility or "Tilly", which later evolved into experimental models such as the Hillman Gnat. Hillman’s contribution was the Hillman 10HP—a Minx-based chassis fitted with a two-seat cab and covered cargo area. Production of the basic saloon continued from 1940 to 1944 for military purposes and essential civilian transportation.

Operators

• British Army, RAF

Minx Mark I to VIII (1945–1957)

After the war, from 1945 to 1947, the Minx retained its prewar 1185 cc side-valve engine and wheelbase but adopted a protruding boot design aligned with emerging three-box styling trends; this iteration was designated as the Minx Mark I. The Mark II followed in 1947 featuring minor refinements.

In 1948, the Mark III arrived with updated aesthetics including saloon, estate, and drophead coupé body styles while maintaining the same engine output of 35 bhp. The subsequent Mark IV in 1949 introduced an enlarged 1265 cc engine delivering a power increase of approximately 7% to 37.5 bhp. Testing showed that a Mark IV saloon could reach speeds up to 67 mph and was priced at £505 including taxes.

The Mark V released in 1951 added chrome side trim and replaced the handbrake with a floor-mounted lever. In 1953, the Mark VI incorporated a refreshed grille design, redesigned combustion chambers, and a two-spoke steering wheel. A distinctive two-door hardtop coupé variant called the Hillman Minx Californian featured a wrap-around rear window. The Mark VII introduced extended rear mudguards and expanded boot capacity.

The Mark VIII debuted in 1954 with a new overhead valve (ohv) 1390 cc engine that later powered early models of the "Audax series" Minxes.

During the early 1950s, Hillman briefly marketed Minxes in the United States aimed at buyers focused on fuel economy; however, reception among American reviewers was mixed.

Between 1953 and 1956, Isuzu manufactured versions of the Mark VI through VIII in Japan under the name Isuzu Hillman Minx, preceding their own Bellel model which launched in 1961.

Rootes Australia produced a two-door coupé utility variant based on the Mark VIII around 1956 known as the Hillman de luxe Utility.

Audax design Hillman Minx (Series I to Series VI, 1956–1967)

The Rootes Group developed the Audax body style in collaboration with the Raymond Loewy design firm, renowned for their 1953 Studebaker coupe designs. Introduced in May 1956, the Hillman Minx adopted a series-based naming convention with yearly updates: Series I (1956), Series II (1957), Series III (1958), Series IIIA (1959), Series IIIB (1960), Series IIIC (1961), Series V (1963), and Series VI (1965). Engine displacement increased progressively from 1390 cc in the initial versions to 1725 cc by the Series VI. Transmission choices featured manual gearboxes with either column or floor-mounted shifters, alongside several automatic options: the Lockheed Manumatic in Series I and II, the pioneering Smiths Easidrive dual-clutch system in Series III, and Borg Warner automatics in Series V and VI. The Series VI also introduced a fully synchromesh gearbox.

A 1958 Series III deLuxe saloon equipped with a 1494 cc engine achieved a top speed of 76.9 mph, accelerated from 0 to 60 mph in 25.4 seconds, and delivered fuel economy of 31.8 mpg (imperial). The tested price was £794 inclusive of taxes.

Throughout these series, variants such as the Singer Gazelle and Sunbeam Rapier were offered. Additionally, certain export markets received badge-engineered models under the Sunbeam and Humber brands.

In New Zealand, Todd Motors assembled Humber-branded versions of these vehicles: the Humber 80 derived from the Minx and the Humber 90 based on the Super Minx. These provided Humber dealerships with smaller alternatives alongside locally built Hawks and Super Snipes. The Humber 80 was distinguished by its unique horizontal bar grille.

Australia saw the release of a Series Va in 1965, featuring an enhanced 1592 cc engine paired with the all-synchromesh transmission later standard on Series VI models.

From September 1956 until June 1964, Isuzu Motors manufactured the Audax Minx under license in Japan as the Isuzu Hillman Minx. Isuzu also created a distinct estate variant called the Hillman Express during this period.

Super Minx (1961–1967)

Introduced at the end of 1961, the Hillman Super Minx was originally planned to succeed the Minx Series III. However, with the arrival of Series V in 1963 replacing Series III, the Super Minx was launched as a separate but closely related model line.

New Minx (1967–1970)

The model that followed the Series VI was commonly referred to as the New Minx, arriving in 1967. This version was a more basic variant of the Hillman Hunter, available in both saloon and estate formats. Initially powered by a 54 bhp 1496 cc four-cylinder engine, it gained an optional 61 bhp 1725 cc engine in 1968. The New Minx was eventually succeeded by the Hillman Hunter De Luxe in 1970.

Scale Models

• Meccano Dinky Toys No. 154 (1954–58), representing the Minx Mark I to VIII at roughly O scale (1:44).
• Meccano Dinky Toys No. 175 (1958–61), depicting the Hillman Minx Series I in approximately O scale (1:44).
• Triang Spot-On model of the Hillman Minx Series V, scaled at 1:42.

External links

• Original Hillman 1939 sales brochure
• Isuzu’s initial Minx Mark VI as it left the production line
• Dedicated Hillman Minx website
• Rootes-Chrysler official site

Type	Year	Engine	Approx. production	Body types	Wheelbase	Max speed	Notes
Minx	1932–33	1185 cc 4-cylinder side-valve	n/a	tourer, sports tourer, 4 light saloon, 6 light saloon, drophead coupé			Wire wheels, Bendix brakes, 3-speed gearbox
Minx	1934	1185 cc 4-cylinder side-valve	n/a	tourer, sports tourer, 4 light saloon, 6 light saloon, drophead coupé			Upgraded to a 4-speed gearbox
Minx Magnificent	1936–37	1185 cc 4-cylinder side-valve	n/a	tourer, sports tourer, saloon, drophead coupé, estate (1937)			New chassis with forward engine placement; pressed steel wheels introduced
New Minx	1938–39	1185 cc 4-cylinder side-valve	n/a	saloon, drophead coupé, estate			Revised styling applied
Super Minx Series I	1961–62	1592 cc overhead-valve inline-4 cylinder	n/a	saloon, convertible, estate
New Minx	1967–70	1496 cc and optional 1725 cc overhead-valve I4	n/a	saloon, estate