What goes wrong, what it costs, and what to check before you buy a used Daihatsu Copen.
The Daihatsu Copen occupies a niche position on the UK market.
We track 5 known issues across the Daihatsu Copen range, including 3 rated as safety-critical. Knowing which variants and configurations to approach with caution can save you from expensive surprises after purchase.
Found a Daihatsu Copen? Enter the reg to see which of our 5 known issues apply to that exact car, plus full MOT history and mileage checks.
L880 (2002–2012) — Engine options included the 659cc Turbo, 1.3L Naturally Aspirated. Our database flags 5 known issues on this generation, 3 of which are rated as safety-critical. The most significant concern is Structural corrosion at mounting points (£500–£1,500 to address).
The Copen's lightweight construction uses thin steel sections that are highly susceptible to corrosion, particularly around suspension mounting points and structural load-bearing areas. MOT data shows this model fails at 90 times the national average for body corrosion at mounting points, with the problem appearing as early as 20,000 miles. The convertible body structure relies on precise mounting point integrity for rigidity, making even minor corrosion a serious safety concern. This is compounded by poor factory corrosion protection on early examples.
Structural corrosion at mounting points compromises the vehicle's safety in a collision and can lead to sudden suspension failure. Repair typically requires cutting out corroded sections and welding in new metal, costing £800-£2,000 depending on extent. Severe corrosion may render the vehicle uneconomical to repair. The car should not be driven if structural integrity is compromised.
Inspect the wheel arches, sills, jacking points and door bottoms carefully. Press gently on sills to check for soft spots. Look underneath for corrosion on structural components. Check the MOT history for corrosion-related advisories or failures.
The Copen's convertible body structure is inherently less rigid than a fixed-roof equivalent and relies on strategic strengthening points to maintain structural integrity. Corrosion in these critical areas reduces the assembly's rigidity to dangerous levels, with MOT data showing failures at 87.7 times the national average. Both the 659cc and 1298cc variants are affected equally, suggesting the issue is related to the common body shell rather than engine-specific factors.
Loss of structural rigidity compromises occupant protection in a collision and may cause the roof mechanism to bind or fail. Repair requires extensive bodywork and strengthening, typically costing £1,500-£4,000. In severe cases the vehicle becomes uneconomical to repair. The car should not be driven if significant structural weakness is present.
Inspect the wheel arches, sills, jacking points and door bottoms carefully. Press gently on sills to check for soft spots. Look underneath for corrosion on structural components. Check the MOT history for corrosion-related advisories or failures.
Brake hose ferrules (the metal crimped ends that connect flexible hoses to rigid brake lines) corrode at extremely high rates on the Copen, with MOT failures at 41.2 times the national average. The problem appears across all mileage bands including very low mileage cars, suggesting poor quality control or inadequate corrosion protection from the factory. Corroded ferrules can leak brake fluid or fail completely, causing immediate loss of braking power.
Corroded brake hose ferrules can fail without warning, causing complete loss of braking power and immediate accident risk. Even minor leakage reduces braking efficiency and allows air to enter the system. Repair requires replacement of affected brake hoses and full system bleeding, costing £150-£400 depending on how many hoses need replacement.
Check brake disc condition for lipping or scoring. Test braking at moderate speed for pulling to one side or vibration through the steering wheel. Review MOT advisories for brake-related items.
Wheel bearings on the 659cc Copen variants develop excessive play at 25.8 times the national average failure rate, typically appearing from 20,000 miles onwards. The lightweight construction and small wheel bearings are likely undersized for the vehicle's weight distribution and cornering loads. The problem affects both front and rear bearings but is more common at the front due to steering and braking loads.
Worn wheel bearings cause poor handling, increased tyre wear, and eventual seizure if left unrepaired. Complete bearing failure can cause the wheel to lock or detach, creating immediate accident risk. Replacement typically costs £200-£400 per bearing including labour.
Listen for knocking, clunking or rattling over bumps during the test drive. Inspect the underside for corroded or cracked suspension components. Check the MOT history for suspension-related advisories, which often predict future failures.
Brake pipes corrode at 7.6 times the national average on Copens, typically affecting the steel lines running along the underside of the vehicle. The combination of road salt exposure, inadequate undersealing, and thin-wall brake lines creates premature corrosion. This affects both the 659cc and 1298cc variants equally, indicating a chassis-level issue rather than engine-specific problem.
Corroded brake pipes can perforate and cause brake fluid loss, leading to reduced or complete loss of braking power. Even minor leakage allows air into the system and reduces braking efficiency. Repair requires replacement of affected pipe sections and system bleeding, typically costing £200-£600 depending on the extent of corrosion.
Check brake disc condition for lipping or scoring. Test braking at moderate speed for pulling to one side or vibration through the steering wheel. Review MOT advisories for brake-related items.
For the full breakdown of all 5 tracked issues with repair costs, see the Daihatsu Copen common problems page.
Based on 8k real DVSA MOT tests, the Daihatsu Copen fails more often than average on several items. The biggest outlier is abs fault at 134x the fleet average, followed by structural corrosion (90x).
When viewing a specific car, check its MOT history for recurring advisories in these categories. See the full Daihatsu Copen MOT failure breakdown for data at every mileage point.
Routine servicing (oil and filter change every 6k miles) typically costs £60–£90 at an independent garage.
See the full Daihatsu Copen service schedule for every interval and cost breakdown.
The Daihatsu Copen has some well-documented weak points, including 3 safety-critical issues that demand careful checking. The right example, properly maintained, can still be a sound purchase — but cutting corners on the pre-purchase inspection is not advisable.
Before committing, check the car's full MOT history, verify the service record is complete, and if possible arrange a specialist inspection. Enter any registration into our free report to see the complete picture.
Get Car Wise maintains a database of known mechanical issues for every popular car on UK roads, tracking the faults that owners, specialists and DVSA data reveal.
When you run a report on a specific Daihatsu Copen, we cross-reference the exact variant, engine and age against our database of 5 known issues. Combined with full MOT history analysis, mileage verification and DVLA data, you get a complete picture before viewing.
Enter the registration for MOT history, mileage verification, known faults for that exact variant, and a Get Car Wise Score.
This guide was compiled from independent expert reviews, DVSA MOT data, specialist workshops and our own database of 5 known Daihatsu Copen issues. We are not affiliated with any source listed.