1956 Austin Healey 100/4 BN2 M Spec.

0 Bids
4:36 PM, 11 Nov 2025Vehicle sold
Sold for

£33,360

(inc. Buyer’s Premium)

Background

Prior to 1952, drivers with the inclination and means to get behind the wheel of a bona fide UK sports car tended to fall into one of two camps.

They were either retired Spitfire pilots called Lofty and Stinker who carried on driving the venerable MGs they’d driven during the war. Even then these were essentially superannuated designs that looked back to an era of coach-built bespokery rather than forward to a brave new world of pressed steel, automation and wind tunnels.

Against all odds,however, these charming automotive anachronisms somehow chimed in perfect pitch with the consumer mood in America and effectively kick-started a new golden age of British sports car production.

These were relatively affordable cars for people who wanted to drive around at 80mph.

In the other camp you would have found cocktail lounge charmers, Brylcreemed bounders and continental types who liked to cut a dash in their Jaguar XK120s.

Classy, fast and with curves that would put Jessica Rabbit to shame, the XK120 and its legendary engine imparted impetus to Jaguar’s stellar Le Mans career and forever associated the brand with the values of speed, style, competition and success.

These were expensive cars for people who wanted to drive around at 120mph.

Step forward Donald Mitchell Healey who, with somewhat unlikely support from Leonard Lord at Austin (later BMC), saw a gap in the market that no-one else had spotted.

A gap that should and would be filled by a car that looked gorgeous, was capable of 100mph and could be mass-produced and rendered affordable through the judicious and pragmatic use of all manner of bits and pieces from the ill-fated Austin Atlantic and BMC’s extensive parts inventory.

The Austin-Healey 100 caused a sensation when it debuted at the 1952 London Motor Show.

Barricades had to be put up to keep the crowds at bay.

Intended as a low-cost, high-performance sports car targeted primarily at the US market, the car had a particularly sporty profile courtesy of beautiful flowing bodywork and an adjustable lay-down windscreen.

Fitted with a strong, reliable and torquey 2,660cc four-cylinder engine, the light and streamlined Healey 100 was a genuine 100 mph-plus car. The BN1 came with a three-speed gearbox but the BN2 had a four-speed plus overdrive, which operated on third and fourth gear, providing six forward gear ratios.

Soon after arriving on US shores, the sleek Austin-Healey 100 became the sports car to own among young Americans empowered by the recent invention of the ‘teenager’ and keen to ride on the crest of the wave of affluence and optimism breaking over 1950’s America.

So much so that 80% of production went to the US in the first year of production. Within two years, some 10,000 Austin-Healey 100s had rolled off the Longbridge production line.

Jaguar produced half that number of XKs during the same time.

After entering two mildly modified cars into the 1953 24 Hours of Le Mans, Austin-Healey used the name 'Le Mans' for a tuning upgrade kit allowing private owners to bring their cars up toward the works race car specification.

The kit involved fitting a pair of SU carburettors with a special inlet manifold and cold air box, a high-lift camshaft, stronger valve springs and a modified distributor. Once fitted, the power increased from the standard 90 to 100bhp.

A later factory variant, based on the BN2 model, was the 100M, which improved further on the Le Mans kit with a stiffer front anti-roll bar, special Armstrong front dampers and high-compression pistons, which increased power to 110bhp and enabled a top speed approaching 120mph with the windscreen folded flat.

The Austin-Healey 100 remains one of the most successful, alluring and charismatic British sports cars ever produced.
 

Key Facts


  • Uprated Cobra-spec. wire wheels
  • Weather gear
  • Heritage Certificate
  • Aluminium coachwork
  • Tonneau Cover
  • Full ‘Le Mans-spec.’ built engine

  • BN2-229252
  • 01,762 Miles
  • 2600cc
  • manual
  • Primrose Yellow
  • Black Leather
  • Right-hand drive
  • Petrol

Vehicle location
THE MARKET HQ, United Kingdom

Background

Prior to 1952, drivers with the inclination and means to get behind the wheel of a bona fide UK sports car tended to fall into one of two camps.

They were either retired Spitfire pilots called Lofty and Stinker who carried on driving the venerable MGs they’d driven during the war. Even then these were essentially superannuated designs that looked back to an era of coach-built bespokery rather than forward to a brave new world of pressed steel, automation and wind tunnels.

Against all odds,however, these charming automotive anachronisms somehow chimed in perfect pitch with the consumer mood in America and effectively kick-started a new golden age of British sports car production.

These were relatively affordable cars for people who wanted to drive around at 80mph.

In the other camp you would have found cocktail lounge charmers, Brylcreemed bounders and continental types who liked to cut a dash in their Jaguar XK120s.

Classy, fast and with curves that would put Jessica Rabbit to shame, the XK120 and its legendary engine imparted impetus to Jaguar’s stellar Le Mans career and forever associated the brand with the values of speed, style, competition and success.

These were expensive cars for people who wanted to drive around at 120mph.

Step forward Donald Mitchell Healey who, with somewhat unlikely support from Leonard Lord at Austin (later BMC), saw a gap in the market that no-one else had spotted.

A gap that should and would be filled by a car that looked gorgeous, was capable of 100mph and could be mass-produced and rendered affordable through the judicious and pragmatic use of all manner of bits and pieces from the ill-fated Austin Atlantic and BMC’s extensive parts inventory.

The Austin-Healey 100 caused a sensation when it debuted at the 1952 London Motor Show.

Barricades had to be put up to keep the crowds at bay.

Intended as a low-cost, high-performance sports car targeted primarily at the US market, the car had a particularly sporty profile courtesy of beautiful flowing bodywork and an adjustable lay-down windscreen.

Fitted with a strong, reliable and torquey 2,660cc four-cylinder engine, the light and streamlined Healey 100 was a genuine 100 mph-plus car. The BN1 came with a three-speed gearbox but the BN2 had a four-speed plus overdrive, which operated on third and fourth gear, providing six forward gear ratios.

Soon after arriving on US shores, the sleek Austin-Healey 100 became the sports car to own among young Americans empowered by the recent invention of the ‘teenager’ and keen to ride on the crest of the wave of affluence and optimism breaking over 1950’s America.

So much so that 80% of production went to the US in the first year of production. Within two years, some 10,000 Austin-Healey 100s had rolled off the Longbridge production line.

Jaguar produced half that number of XKs during the same time.

After entering two mildly modified cars into the 1953 24 Hours of Le Mans, Austin-Healey used the name 'Le Mans' for a tuning upgrade kit allowing private owners to bring their cars up toward the works race car specification.

The kit involved fitting a pair of SU carburettors with a special inlet manifold and cold air box, a high-lift camshaft, stronger valve springs and a modified distributor. Once fitted, the power increased from the standard 90 to 100bhp.

A later factory variant, based on the BN2 model, was the 100M, which improved further on the Le Mans kit with a stiffer front anti-roll bar, special Armstrong front dampers and high-compression pistons, which increased power to 110bhp and enabled a top speed approaching 120mph with the windscreen folded flat.

The Austin-Healey 100 remains one of the most successful, alluring and charismatic British sports cars ever produced.
 

Video

Overview

This 100/4 BN2 left the factory with Healey Blue paintwork, a blue hood and interior trim, a laminated windscreen and optional heater.

In 1955, a number of ‘100M’ or M-Spec cars were tweaked for fast-road driving or motorsport, the chief upgrades being with larger carburettors, a specialised cold air intake box, high-lift camshaft and 8.1:1 compression pistons. These M-Spec cars were good for 110bhp and were easily identifiable by the louvred bonnet and belt.

These modifications were also made available with a ‘Le Mans Engine’ kit which allowed existing Healey owners to convert their cars to M-Specification without incurring the considerable costs of purchasing an entirely new vehicle.

This fine example has had that work carried out by Denis Welch Motorsport and ‘A Head 4 Healeys’ of Rugby in 2010, as evidenced by numerous invoices, bills, receipts and dynamometer tests.

A good deal of its liveliness and agility is owed to the car’s construction. With the exception of the boot lid, all panels were fabricated afresh in aluminium to original patterns in 1987, the work carried out by esteemed coachbuilder Rod Jolley of Lymington.

The result of the ‘Le Mans’ fettling and aluminium replacement panels is a car that sounds as good as it drives – and it drives very well indeed, pressing on with enthusiasm when asked and rewarding the driver with the handling and balance characteristics you need to exploit the extra potency.

The vendor tells us that the overdrive function can take a little while to function properly but does so reliably once the solenoid has warmed to the task in hand.
 

Exterior

The car presents superbly from every angle and is a joy to behold.

The bodywork is in excellent order and we saw no dinks, dents, dimples or creases of significance anywhere.

Neither did we see any corrosion, bubbling or blistering on the largely aluminium car.

Any deviations from perfection in terms of the crispness of panel gaps and shut-lines are entirely consistent with the car’s age.

Thanks to the car’s bare-aluminium louvred bonnet panel and leather retaining strap, no-one will be left in any doubt as to the car’s M-Spec credentials and sporting capabilities.

The car sits on wider, period-correct Cobra-specification wire wheels which are in fine fettle bar one or two scuffs to the rims.

The wheels are shod in matching Goodyear Eagle NCT5 rubber which appears to have a good deal of useful life left in it.

The Primrose Yellow paintwork has held up very well indeed and the finish has succeeded in retaining a good deal of shine and lustre.

There is a crack to the paint and section of missing paint on the nearside edge of the boot lid; some minor paint chips and scuffs on the rearward bases of both offside wheel arches: and a few bits of missing paint at the top of both ‘A’ pillars.

The black vinyl hood goes up and down without too much fuss and is devoid of any holes, rips or tears that we can see.  The tonneau cover also fits well but does have a couple of holes in it.

The lights, lenses, badging, trim and other exterior fixtures and fittings are all pretty much beyond reproach.

 

Interior

The interior is every bit a match for its exterior counterpart in terms of quality and preservation.

The black leather upholstery on the bucket seats has only a few creases on the outer bolsters to show for its dutiful service, and the leather on the transmission tunnel is lacking even those.

The lowest parts of the seat backs are a little ragged where the leather meets the shell of the seat, but the raggedness is hidden until you push the seat backs forward and, in any case, it doesn’t compromise either the form or function of the seats.

There’s a small strip of (presumably) remedial black tape at the top of the driver’s seat back.

The carpets and mats are in very good order, having been replaced in 2011, and the yellow paint on the dashboard is bright and free from any significant scuffs or scratches.

The Moto-Lita steering wheel looks just right, and the sporting heart and character of this M-Spec car are underlined by the car’s four-point competition racing harnesses.

As far as we and the vendor are aware, the car’s spartan array of buttons, knobs, dials, gauges and switches all do what they’re supposed to do, with the exception of the under-dash heater control knob, which has gone AWOL.

The boot is as good as the rest of it and contains some tools, a car cover, a few spare parts, and a full-sized spare wheel.
 

Mechanical

The engine and engine bay look to be in very good condition and everything we’ve seen is present, correct, clean, dry and orderly.

The M-Spec clues - twin SU carbs and a bigger air box - are there for all to see, as is the metal plaque reading ‘This car has been fitted with a 'Le Mans' modification kit’.

The vendor has removed the fuse from the aftermarket thermostatic fan because (i) it was draining the battery and (ii) he doesn’t think the car needs it.

The good news extends to the undersides of the car, which look to have oodles of structural integrity and probably wouldn’t recognise snow, rain, sleet or salt if you showed them photographs.
 

History

Beyond the car’s 2010 M-Spec engine upgrade, it was the recipient of over £12,000-worth of work courtesy of respected marque specialists JME Healeys in 2017.

The work carried out was comprehensive and entailed a thorough overhaul of the car and the replacement or refurbishment of all and any parts as appropriate and required.

The car’s cylinder head was machined for use with unleaded petrol at this time.

Included with the car is a V5C, a recent HPI report, various guides and manuals, sundry bills, receipts and invoices, old tax discs and MoT certificates, photographs of the car being re-panelled in aluminium by Rod Jolley, and a photograph of it doing something lively on a circuit somewhere.

It comes with an entire lever-arch file of history, including a British Motor Heritage Certificate confirming the original specification.

The odometer was replaced between August 2010 (84,450 miles) and August 2011 (193 miles) - as evidenced by the MoT trail. 
 

Summary

This is a fine example of a rare and highly sought-after car.

With an M-Spec engine upgrade and aluminium coachwork by Rod Jolley, the car has the build quality to match its sporting credentials and is as much a pleasure to drive as it is to look at and admire.

We like it a great deal.

We think it would be equally capable of delighting its next owner as a car for sprints, hill climbs or events, or as something to use for blissful jaunts to the Dog & Duck on sunny Sunday afternoons. 

We are happy to offer this car for auction with an estimate in the range of £30,000 - £40,000.

Viewing is strongly encouraged, and this lot is located at Bonhams|Cars Online HQ. Viewings are STRICTLY BY APPOINTMENT and we are open weekdays between 10am - 12pm or 2pm - 4pm. To make a booking, please use the ‘Enquire About This Vehicle’ button on the listing. Feel free to ask any questions, or try our ‘Frequently Asked Questions’.

 

About this auction

Seller

Private: lawrie49


Viewings Welcome

Viewing is strongly encouraged, and is strictly by appointment. To book one in the diary, please get in contact.

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