The A70 Supra is a different proposition from the later A80: an angular, well-equipped grand tourer with straight-six power, rear-wheel drive and a useful hatch. Its appeal is increasingly obvious, but buying one demands care with rust, engine identity, cooling history and decades of modifications. This UK-focused guide concentrates on 7M-GE and 7M-GTE cars while explaining why Japanese imports and engine swaps require separate parts and inspection plans.
Our buying verdict
Buy a structurally sound, complete car with clear engine and cooling records. A properly maintained naturally aspirated Supra can be a better purchase than a turbo bought on a power claim and a vague head-gasket story. Inspect the rear towers, sills and rails as carefully as the engine bay.
Which Mk3 Supra should you buy?
The third-generation Supra arrived in the UK in 1986 and continued into the early 1990s. UK buyers were offered the naturally aspirated 3.0-litre 7M-GE and, later, the single-turbo 3.0-litre 7M-GTE. Both are straight-sixes, but the turbo installation brings different equipment and loading. Identify the actual engine and market specification before comparing performance, parts or prices.
Japanese-market A70s can have other engines, notably 2.0-litre 1G-family versions and the 2.5-litre twin-turbo 1JZ-GTE. A JZA70 is not simply a UK 7M car with a badge change. Many survivors have also received later engines or transmission conversions. Obtain engine and chassis identification, import documents and installation records rather than relying on the word Supra.
| Version | Appeal | What to establish |
|---|---|---|
| 7M-GE naturally aspirated | Straight-six touring character without turbo hardware | Cooling, oil pressure/use, timing history and actual gearbox. |
| 7M-GTE single turbo | The familiar UK turbocharged A70 experience | Head-gasket repair evidence, boost/fuelling changes, turbo and cooling condition. |
| 1JZ-GTE import | Different engine character and Japanese-market interest | Original specification versus swap, turbo arrangement, management and parts support. |
| 1G-family import | A different specification and buying market | Exact engine, output, transmission and availability of relevant components. |
| Removable-roof car | Open-air option with a distinctive character | Correct latches/tool, seals, storage and water-ingress checks. |
Standard UK manual specifications generally pair the naturally aspirated engine with the W58 five-speed and the turbo with the stronger R154 five-speed. Four-speed automatics were also offered. On a modified car, verify the installation: a six-speed claim or an unexpected gearbox needs an explanation and records, not an assumption that it is factory equipment.
Choose around use. A standard or mildly modified car with coherent maintenance is usually easier to diagnose than an unfinished project. An enthusiast-built conversion can be worthwhile, but ask for the full specification, installer, mapping, cooling, exhaust, mounts, driveline and brake details. A dyno figure alone does not establish durability or roadworthiness.
Original trim, glass and body parts can affect the buying decision substantially. Decide whether you want a usable driver or a close-to-original collector car before paying a premium. An honest modified car should be valued and insured as such. Do not pay for an unproven rare version because its badges and wheels look convincing.
Supra A70 prices: compare engine and condition
Car & Classic Mk3 results checked on 3 November 2026 included a 1989 3.0 Turbo manual with a stated 64,704 miles at £13,000 and a 1990 3.0 manual with 40,046 miles at £26,500. A 1990 2.0 twin-turbo automatic was advertised at £17,995. These are seller asking prices and descriptions, not verified condition assessments or achieved sale values.
The sample is small and heterogeneous, so it does not support a single national price band. A 2.0 import, a 3.0 turbo, an ordinary naturally aspirated car and a 1JZ conversion attract different buyers. One result described a 2.5 twin-turbo manual with six speeds; that requires checking as a possible conversion or listing error before treating it as a standard comparable.
Separate UK registration from original market specification. Inspect mileage units, odometer changes, foreign paperwork and the history since import. A low displayed reading needs a coherent record. Storage and restoration claims should be backed by invoices and photographs showing the work before it was covered by paint and trim.
Set a total budget for inspection, transport, baseline servicing and necessary repairs. A cheaper car with corrosion, missing glass and an engine fault can cost more than a complete, sound example. Obtain a written estimate after a proper inspection rather than budgeting from old forum prices or the cost of a head gasket in a parts catalogue.
Rust, rear towers, rails and water ingress
Rear wheelarches and the structure behind them are priority checks. With permission, inspect beneath luggage-area trim and around the rear suspension towers. A small outer blister can be the visible edge of much larger deterioration. Have the area assessed from above and below rather than assuming an arch repair section completes the job.
Inspect sills, floor edges, jacking areas, chassis rails, suspension mounting points and the lower windscreen/scuttle region. The car’s age means even an apparently cared-for example can hide previous repairs. Use a lift and a specialist who understands the shell. Do not treat fresh underseal as evidence that the enclosed sections are healthy.
Check boot and hatch seals, rear-light sealing and spoiler mountings for water entry. Inspect the spare-wheel region and carpets for dampness, staining and corrosion. A dry day can conceal an active leak, so ask how the car behaves after rain and whether any repairs addressed both the source and the affected metal.
Look for inconsistent panel gaps, rippled seams, overspray, filler and mismatched paint. A documented accident repair may be acceptable, but unexplained distortion or a poor alignment report needs investigation. Do not accuse a car on one cosmetic clue; ask a competent inspector to assess the whole structure and repair quality.
Glass, seals, mouldings, lamps and original trim deserve a complete inventory. Some parts can be difficult to replace, so obtain current sourcing and fitted costs before purchase. Bonnet and hatch supports should hold their panels securely. Do not work beneath a heavy panel supported by a failing strut or an improvised prop.
On removable-roof cars, inspect the panel, latches, correct tool and storage arrangement. Check for water tracks around the roof and down the cabin, and assess fit without forcing it. New seals cannot correct every alignment or structural problem. A roof that has been permanently sealed shut needs an explanation and a repair plan.
7M engines, head-gasket evidence and drivetrain
Head-gasket claims need more than a brand name
The 7M’s head-gasket reputation is central to buying discussions, particularly on turbo cars. Ask what work was carried out, why, by whom and how far the car has travelled since. The invoice should describe the assessment of the head and block, machining where required, gasket choice, fasteners, assembly procedure and cooling-system work.
Do not assume a metal gasket or uprated fasteners prove the repair was successful. Surface condition, preparation, correct assembly and the cause of the original overheating or failure matter. Torque procedures depend on the actual fasteners, lubricant, gasket and build; this buying guide is not a universal retorque recipe. Have a knowledgeable engine specialist evaluate the records and car.
Inspect oil and coolant when cold, watch the first start and assess fully warm running. Persistent coolant loss, abnormal pressure, contamination, smoke or overheating warrants testing and diagnosis. A clean filler cap does not rule out a fault, and a single chemical test does not certify every aspect of engine condition. Do not remove a hot pressure cap.
If the engine previously mixed coolant and oil or was overheated, ask whether consequential bearing and other damage was assessed. A new gasket does not automatically restore an engine that has been run with poor lubrication. Measured oil pressure, compression or leakage checks may be useful where indicated, interpreted by someone familiar with the engine.
Timing belts and cooling
The standard 7M engines use a timing belt. PistonHeads’ historical guide cites 60,000 miles or four years, but confirm current advice for the engine, parts and use with the workshop. If a credible dated invoice is absent, arrange replacement rather than relying on an old sticker or a claim that the engine might survive a belt failure.
Identify whether an invoice covers the belt alone or the tensioning and related components too. The water pump is a separate item whose condition and history still matter. Inspect radiator, hoses, thermostat, fan/shroud arrangement, coolant and any modifications. A healthy cooling system is part of the engine repair, not an optional accessory to it.
Imports and swaps need engine-specific timing advice and kits. A 7M belt does not fit a 1JZ merely because both are in an A70. Ask for the actual engine number and installation specification and confirm the correct service procedure before ordering parts.
Turbo, fuelling and engine modifications
On the 7M-GTE, inspect the turbo, oil/coolant lines, boost plumbing, intercooler and controls. Power delivery should be clean under sensible load without persistent smoke, misfire or uncontrolled boost. Ask what boost pressure and mapping are used and whether fuelling, ignition and cooling were developed together.
A manual bleed valve or a large turbo is not evidence of a complete performance build. Obtain records of injectors, pump, management, tuning and supporting hardware where changed. An independent specialist should assess whether the car is coherent and whether the claimed output is supported. Disclose changes to the insurer.
Rough idle and starting faults need diagnosis across ignition, air leaks, fuel delivery, sensors and wiring. Old alarms and immobilisers can complicate the picture. A seller’s statement that it only needs a sensor should be backed by testing, particularly if the car cannot be driven and assessed fully.
Transmission and differential
Test every manual gear from cold and again when warm. Check for synchromesh crunching, bearing whine, jumping out and clutch slip or poor release. The R154 has a strong reputation, but no gearbox is indestructible, especially after increased torque and hard use. A tough model name is not a substitute for an inspection.
On automatics, test hot and cold engagement, normal shifts, kickdown and the relevant overdrive/power functions. Identify the actual transmission and correct fluid/service requirements. Harshness, flaring and delays need diagnosis before a purchase price is agreed. A conventional service does not guarantee to cure internal wear.
Inspect differential, propeller-shaft and driveshaft areas for leaks, worn joints and mounts. Listen for noise on drive and overrun and assess vibration at normal road speeds. A claimed limited-slip differential should be identified and assessed professionally rather than demonstrated through aggressive driving.
Suspension, steering, brakes and tyres
The A70’s independent double-wishbone suspension needs its bushes, joints, dampers and alignment to work together. Inspect for play, corrosion, seized adjusters and tired mounts. A car that pulls or wanders may need more than tracking. A complete inspection-led refresh is preferable to fitting arbitrary stiff components to mask wear.
Where electronic damping or other special equipment is fitted, confirm what remains and how it operates. Lowering, large wheels and brake conversions need records and a sensible replacement-parts route. Check tyre specification, age, inner-edge wear, wheel damage and clearance at full steering and suspension movement.
Test braking progressively and inspect discs, pads, calipers, hoses, pipes and handbrake operation. Low-use cars can have sticking hydraulics. A published claim that brakes are cheap to restore should not replace a current fitted quotation, especially if several components or corroded fixings need attention.
Pop-up lights, equipment and trim
Test the pop-up headlights through their correct sequence and check alignment, motors, lamps and wiring. Inspect rear lamps for moisture and damage. Test heater controls, blower speeds, demister, air conditioning, windows, mirrors, locks, seat functions and audio. Do not assume a non-working air-conditioning system only needs gas; establish the actual fault.
Inspect bolsters, dashboard, door cards, headlining, carpets and luggage trim. An imported digital instrument cluster needs its own functional and mileage-unit checks. Check all keys and locks and ask about cluster replacement or odometer repair. Wear is evidence to interpret alongside history, not a precise mileage calculator.
Inspect beneath mats and around the footwell for dampness or hydraulic leaks where relevant. A clutch-fluid leak, roof leak and heater leak have different repair plans. Diagnose the source and assess any damaged wiring or metal. An attractive retrim should not conceal the structural areas that need inspection.
Maintenance costs, timing kits and alternators
Affiliate disclosure: eBay parts links below are affiliate links using our campaign. We may earn a commission if you buy, at no extra cost to you. Links open search results rather than a verified individual product. Check engine, year, part number, seller, condition and returns; search results can contain incompatible items.
JDM Garage UK listed genuine Toyota timing belt 13568-49015 for stated 7M-GTE applications, including MA70, at a displayed £40 when checked on 3 November 2026, with a second £33.33 figure also shown. Confirm tax treatment and the current total before ordering. This is a belt-only price, not a tensioner/water-pump kit or installed service.
| Job / item | Cost the complete scope | Relevant parts search |
|---|---|---|
| 7M timing service | Belt, appropriate tensioning parts, seals as required and labour; confirm time/mileage advice. | Compare 7M timing kits |
| Alternator | Test battery, cables and charging; verify 7M versus import/swap application. | Search 7M-GTE alternators |
| Cooling system | Pump, radiator, thermostat, hoses, fan arrangement and correct filling. | Search 7M cooling parts |
| Head-gasket-related work | Diagnosis, machining/inspection, correct gasket/fastener procedure and consequential-damage assessment. | Search 7M-GTE gasket components |
| Routine service | Engine-specific oil, filters, plugs and hoses. | Search 7M-GE service parts |
| Clutch / transmission | Identify W58, R154, automatic or conversion and include access labour. | Search R154-related clutch parts |
| Suspension and brakes | Inspect the full system and include seized hardware and alignment. | Search A70 suspension parts |
The links are separate eBay searches and do not guarantee the quoted belt or price. Results can include A80, 1JZ/2JZ or unrelated components, used items and incomplete kits. Confirm part numbers, actual engine and gearbox, condition, quality, VAT, delivery and returns. A cheap gasket or belt does not set the cost of a correctly performed repair.
Agree a baseline service and ongoing plan for oil, filters, timing, cooling, brake fluid, tyres and drivetrain fluids. A car coming out of storage needs fuel-system, rubber and brake assessment before regular use. Retain dated invoices and build information, especially on a modified car, so future servicing is not based on guesswork.
Hidden A70 ownership costs
Set a first-year budget before making an offer. Add the purchase price, fees and collection, independent inspection, immediate servicing, diagnosed repairs, insurance, storage and a reserve for unresolved work. Use quotations for the car in front of you; a percentage of the purchase price is a poor substitute for knowing what needs doing.
- Rear arch and tower rust can spread beyond visible paint and require substantial dismantling, welding and refinishing.
- A claimed head-gasket repair may leave unresolved cooling or bearing damage; obtain a diagnosis rather than pricing a gasket alone.
- Glass, removable-roof seals, original trim and electrical equipment can be difficult to source.
- Correcting an undocumented engine or gearbox conversion can involve management, cooling, driveline, exhaust and insurance work.
- Parts are only part of the bill. Access, diagnosis, fluids, alignment, seized fasteners and VAT can change the total. Ask the workshop what its quotation includes and how additional work will be agreed.
- Exchange units and delivery. Alternators, starters and other rebuilt components can require a returnable old unit. Compare the surcharge, return postage, deadline and warranty before choosing a supplier.
- Insurance and downtime. Obtain a quote for the actual specification and declared modifications. Allow for recovery and alternative transport if this will be your only car.
Supra Mk3 viewing checklist
Before travelling
- Confirm registration, exact version, seller identity and ownership history. Ask about accidents, insurance write-offs, engine changes and modifications.
- Read the MOT chronology and request invoices, not just a stamped service book. Agree a cold start, inspection access and a properly insured test drive.
- Get a written list of included keys, original parts and any outstanding faults. For a distant car, request current underside and engine-bay photographs.
At the car
- □ Identify 7M-GE/7M-GTE versus import or swap, actual gearbox, body and roof specification.
- □ Inspect rear arches/towers, sills, rails, floors, screen base and mounting areas on a lift and beneath trim where authorised.
- □ Read detailed head-gasket and cooling invoices; investigate overheating or oil/coolant contamination.
- □ See a cold start and fully hot running, assess oil use/pressure concerns and confirm timing history.
- □ Test transmission, clutch, differential, brakes and suspension with a sensible road test and appropriate diagnostics.
- □ Operate lights and equipment, inspect roof seals and inventory scarce glass and trim before negotiating.
- □ Compare identification with documents, check panel alignment and inspect accessible structure on a lift. Never go beneath a car supported only by a jack.
- □ Try lights, wipers, washers, heater, locks and warning lamps. Inspect tyres for age and damage as well as tread.
- □ Drive from cold to fully warm, using gears and brakes progressively. Note smoke, overheating, vibration, warning lights or hesitant acceleration; stop if a serious fault develops.
- □ Recheck hot starting and visible leaks afterwards. Record unresolved faults and obtain specialist estimates before paying a deposit.
Proceed when identity, structure and maintenance evidence fit the description. Investigate when a fault has a plausible cause but no diagnosis. Walk away when crucial inspection is refused, identity remains uncertain or the budget depends on a serious fault being cheap. Put any inspection condition and deposit terms in writing.
Toyota Supra A70 buying questions
Is every Mk3 Supra a 7M-GTE?
No. UK cars include 7M-GE and 7M-GTE, while imports and swaps can use 1G, 1JZ or other engines. Identify the actual installation.
Does a metal head gasket prove the engine is sorted?
No. Preparation, machining where required, fasteners, assembly, cooling and any consequential damage matter. Obtain records and a specialist assessment.
Does the 7M have a timing belt?
Yes. Confirm the correct time/mileage advice and a dated service invoice. A loose belt receipt is not proof of a completed timing service.
Is the R154 indestructible?
No. Its reputation does not remove the need to assess wear, modifications, clutch and actual operation.
Where is the most important rust inspection?
Rear arches and towers are priorities, alongside sills, chassis rails, floors, screen base and suspension mounting areas. Examine hidden areas, not just exterior paint.
Sources and research method
Independently written desk research by Unusual Cars UK, checked on 3 November 2026. We have not road-tested or inspected the illustrated cars or independently authenticated sellers’ claims. Buying recommendations and inspection priorities are our editorial assessment. Historical guides inform technical context; their old price bands are not current valuations. Confirm service requirements against the actual vehicle and suitable workshop information.
- PistonHeads: Supra Mk3 guide — Engine, gearbox and structural context; historic prices and universal torque instructions not adopted.
- UK Mk3 Supra Owners Forum: buyer’s guide — Primary enthusiast inspection context, treated as dated owner guidance rather than a current repair tariff or guarantee.
- JDM Garage UK: Toyota 13568-49015 — Primary belt-only application and displayed price checked 3 November 2026.
- Car & Classic: Mk3 Supra listings — Dated asking examples; engine and conversion distinctions retained.
- GOV.UK used-car checks and MOT history — document and test-history checks.
Images are illustrative surviving vehicles, not the advertised cars discussed in the market section. Individual credits and licence links accompany each photograph. No endorsement by a photographer, club, supplier or seller is implied. Prices and availability can change.
