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AC Cobra and Cobra replicas
By Jon Cosson · Last checked
Almost every Cobra at a general UK auction is a replica, built from a kit on a new chassis, often with Ford Sierra or Jaguar parts and a Rover or Ford V8. This guide covers how to judge a replica, and how genuine AC and Shelby cars differ.
At a glance
- Years
- genuine cars 1962 to 1969 (260 from 1962, 289 to 1965, 427 from 1965, AC 289 to 1969); later AC-built cars from the 1980s; replicas built in the UK from the 1970s to today
- Body styles
- two-seat open roadster in 289 (slim body) or 427 (wide-arched body) style
- Engines
- original AC cars: Ford 260, 289 and 427 V8s; replicas: mostly Rover V8, Ford, Chevrolet or GM V8s, occasionally Jaguar
- Built in
- original AC cars: Thames Ditton, England, with Shelby in California; replicas: many small UK makers
Why people buy one
- A replica gives the look and V8 noise of a 1960s Cobra in a light, simple car.
- Rover V8 and Ford V8 engines are well supported and widely understood.
- Some established UK kit makers still support their designs with parts and advice; check whether a car's maker is still trading.
- Donor parts from the Ford Sierra and Jaguar XJ are common and generally easy to source.
- The UK Cobra Replica Club, founded in 1987, offers technical help and lets non-owners join before buying.
What to weigh up
- Build quality depends on the person who assembled the car, not just the kit maker, so two cars of the same make can be very different.
- Paperwork can be messy: older kit cars may still be registered under a donor's identity (for example as a Ford or Daimler), while others carry a Q plate. A V5C that simply reads "AC Cobra" on a replica should be queried.
- Since 2009, new kit cars need Individual Vehicle Approval (IVA), which replaced the Single Vehicle Approval (SVA) brought in in 1998; earlier cars may have had no approval test at all.
- Insurance needs a specialist kit car policy, and some insurers may struggle with Q-plated cars, so get a quote before bidding.
- A replica described as a genuine AC or Shelby car is a serious warning sign. Genuine 1960s Cobras were built from 1962 and carry CSX (Shelby-bound cars) or COB and COX (cars sold by AC) chassis numbers; one at a general auction needs expert verification and documented history before any bid.
- From the 1980s Autokraft built the AC Mk IV at Brooklands using original AC tooling and a Ford 5-litre V8 (sources give about 450 to 480 cars). These and AC's later cars are genuine ACs, not replicas, and are not covered in detail here.
Where they rust
- Most replicas have glassfibre bodies, so look for cracks, crazing and stress marks around the doors, bonnet and boot openings and wheelarches.
- The steel chassis, usually large round or square tubes; check for rust, poor welds and accident damage, especially at the front crossmember and suspension mounts.
- Body mounting points, where the body is bonded or bolted to the chassis.
- Floors and footwell panels, which may be aluminium or steel sheet riveted to the chassis.
- Jaguar rear subframe and its rubber mounts on cars that use Jaguar XJ suspension.
- Sierra-derived hub carriers, wishbones and differential mounts on Sierra-based cars.
- Exhaust side pipes and their mounts, which get hot and corrode.
Mechanical weak spots
- Engine: Rover V8 is the most common; also Ford small-block and Chevrolet or GM LS V8s. Check for oil leaks, overheating and a sound cooling system, as V8s run hot in a small engine bay.
- Gearbox: often from the donor (Ford or Rover) or a Borg Warner or Tremec unit; check for crunching changes.
- Rear axle: Sierra or Jaguar differentials are common; listen for whine and check driveshaft joints.
- Suspension: check that wishbones, bushes and dampers are in good order and that the geometry has been set up properly.
- Steering: many cars use a donor rack; check for play and rubbing tyres on full lock.
- Brakes: look at the size of brakes for the power output, and check pipes and hoses for chafing on the chassis.
- Electrics: home wiring can be untidy and unsafe; look for proper fuses and a battery cut-off.
At a Mathewsons viewing
- Read the V5C and check what it says: maker (for example "Pilgrim" or "Dax"), model, date, and whether the number is a Q plate, an age-related plate or the donor's original number. Check the VIN on the chassis matches the V5C.
- Ask for build records: kit invoices, donor documents, IVA or SVA certificate, photographs and the builder's name. A well-documented build is easier to judge than one with a vague history.
- Look along the chassis and under the car with a torch for rust, poor welding, chafed brake pipes and loose wiring.
- Check the panel fit, door gaps and paintwork, and look for cracks in the glassfibre around the openings.
- Open the bonnet and look for leaks, the cooling system and the quality of the wiring, and if staff start the car, listen for knocks and watch the temperature; do not assume it will be started.
Parts, specialists and clubs
Most replica parts come from mass-produced donors and are easy to source, while body and chassis parts are available from the original makers if they are still trading. The UK Cobra Replica Club offers technical help for owners and buyers, and the AC Owners Club covers genuine AC cars, including the Mk IV.
Seen on Bangers & Cash
- AC Cobra replica (Bangers & Cash series 1, episode 8, First shown June 2019)
Sources
- 1967 AC 289 Sports 'Cobra' (RM Sotheby's), accessed 14 October 2026
- The AC Cobra Mk IV (My Car Quest), 1 October 2018
- Vehicle registration: kit-converted vehicles (GOV.UK), accessed 14 October 2026
- What is a Q plate? (Confused.com), 11 September 2026
- UK Cobra Replica Club, accessed 14 October 2026
- 2001 Pilgrim Sumo (The Market), accessed 14 October 2026
- 1975 AC Cobra Southern Roadcraft replica (Iconic Auctioneers), accessed 14 October 2026
- AC Cobra (Wikipedia), accessed 14 October 2026
An independent guide from Thornton-le-Dale. Not connected with Mathewsons or the programme.