Daihatsu Copen: Complete Guide to Japan's Tiny Convertible Sports Car

Overview and History

The Daihatsu Copen is the only kei car ever built with a power retractable hardtop from the factory. That single feature makes it unlike anything else in the 660cc class. While the Honda Beat, Suzuki Cappuccino, and Autozam AZ-1 get most of the attention from the ABC trio era, the Copen quietly became the best selling kei sports car in Japanese history. Over 56,000 first generation cars rolled out of Daihatsu's factory between 2002 and 2012, and the second generation has been in continuous production since 2014.

The Copen debuted as a concept at the 1999 Tokyo Motor Show. Daihatsu took the unusual step of asking the public if they actually wanted it built. The response was overwhelming, and the production L880K arrived in June 2002. It packed a turbocharged 659cc four cylinder engine, front wheel drive, and that trick aluminum hardtop developed jointly with Pininfarina and Webasto. At a time when most kei cars were basic transportation, the Copen was a genuine sports car with a luxury feature.

The first generation L880K ran for a decade with minor updates. Daihatsu announced the end of production in April 2012, capping it off with a 10th Anniversary Edition. The car had built a loyal following in Japan, the UK (where Daihatsu sold it as a regular model from 2004 to 2010), and across Southeast Asia.

The second generation LA400K launched in June 2014 with a radical new idea: the D Frame monocoque chassis with interchangeable resin body panels. Daihatsu called it "Dress Formation." Owners could swap 11 exterior panels to completely change the car's appearance. Three factory body styles were offered: the angular Robe, the retro round Cero (which echoes the original L880K's curves), and the rugged looking XPLAY. Under all three skins, the mechanicals are identical.

Toyota also sells the second generation as the Toyota Copen GR Sport, tuned by Gazoo Racing with stiffer suspension, a Torsen LSD, and BBS forged wheels. Toyota announced in September 2025 that GR Sport production will end in August 2026, likely closing the book on the Copen entirely.

For US buyers, the big news is the 25 year import rule. The first L880K Copens from June 2002 become legally importable in 2027. That window will widen every month as newer production years become eligible. The LA400K remains decades away from US eligibility unless regulations change.

Specifications

L880K (2002 to 2012)

The first generation uses the JB-DET, a turbocharged 659cc DOHC four cylinder. Four cylinders in a kei engine is unusual. Most competitors used three cylinder blocks. The extra cylinder gives the JB-DET a smoother power delivery and a higher revving character than typical kei turbo motors. Full specs are documented in the automobile-catalog L880K reference.

• Engine: 659cc JB-DET, DOHC 16 valve, turbocharged, intercooled
• Power: 64 PS (63 hp) at 6,000 RPM (kei class limit)
• Torque: 81 lb-ft (110 Nm) at 3,200 RPM
• Compression ratio: 8.2:1
• Transmission: 5 speed manual or 4 speed automatic
• Drivetrain: Front wheel drive
• Curb weight: 1,852 lbs (840 kg) manual, 1,830 lbs (830 kg) some early models
• Wheelbase: 87.8 inches (2,230 mm)
• Overall length: 133.7 inches (3,395 mm)
• Overall width: 58.1 inches (1,475 mm)
• Overall height: 49.0 inches (1,245 mm)
• Tires: 165/50R15
• Fuel tank: 10.6 gallons (40 liters)
• Turning radius: 15.1 feet (4.6 meters)
• Fuel economy: ~38 mpg combined (owner reported), up to 42 mpg highway
• Top speed: 108 mph (electronically limited at some markets)

LA400K (2014 to Present)

The second generation swapped to the KF-VET, a turbocharged 658cc three cylinder shared with other Daihatsu kei models. It loses the four cylinder smoothness but gains slightly more torque across a wider band. The CVT option adds paddle shifters with seven virtual gears.

• Engine: 658cc KF-VET, DOHC 12 valve, turbocharged, intercooled
• Power: 64 PS (63 hp) at 6,400 RPM
• Torque: 68 lb-ft (92 Nm) at 3,200 to 5,100 RPM
• Transmission: 5 speed manual or CVT with 7 speed manual mode
• Drivetrain: Front wheel drive
• Curb weight: 1,874 lbs (850 kg) manual, 1,918 lbs (870 kg) CVT
• Wheelbase: 87.8 inches (2,230 mm)
• Overall length: 133.7 inches (3,395 mm)
• Overall width: 58.1 inches (1,475 mm)
• Overall height: 50.4 inches (1,280 mm)
• Tires: 165/50R16 (Robe, Cero), 195/45R16 (GR Sport)
• Fuel tank: 7.4 gallons (28 liters)
• Fuel economy: ~42 mpg combined (JC08 cycle estimate)

The Power Retractable Hardtop

This is the Copen's party trick and the reason most people fall in love with the car. Both generations feature a fully electric aluminum hardtop that folds into the trunk in approximately 20 seconds. Flip two manual latches at the header rail, press and hold the switch on the center console, and the entire roof lifts, rotates, and stows itself behind the seats. It works in reverse just as smoothly.

The L880K system was co-developed with Webasto, the German company that builds retractable hardtops for Mercedes, BMW, and other premium brands. The fact that Daihatsu put this technology into a kei car costing under two million yen is remarkable. No other kei car has ever offered a power hardtop. The Cappuccino had a three piece targa roof that required manual removal. The Beat had a basic fabric soft top. The Copen gives you proper coupe weather protection with open air driving at the push of a button.

The roof mechanism uses a hydraulic pump and a series of linkages. When stowed, the roof consumes most of the trunk space, leaving room for about one small duffel bag. Roof up, you get a reasonably sized trunk for a kei car. This is the trade off, and it is worth it.

The LA400K refined the system with better sealing and slightly quieter operation, but the fundamental engineering remains the same. Both generations share the same basic trunk space penalty when the top is down.

Pros and Cons

Pros

The power hardtop changes everything. No rattling canvas, no fogged plastic rear window, no leaks at highway speed. The aluminum hardtop gives you genuine coupe refinement with the roof up and true convertible fun with it down. Nothing else in the kei class comes close to this experience.

Turbocharged torque makes it easy to drive. With 81 lb-ft of torque at just 3,200 RPM (L880K), the Copen pulls strongly from low RPM without needing to wring it out. Unlike the naturally aspirated Honda Beat that demands 7,000+ RPM to come alive, the Copen is relaxed and punchy around town. You can cruise in fifth gear at 40 mph without complaint.

Build quality punches above its class. The interior materials, panel gaps, and overall fit and finish are a cut above typical kei cars. The Drive and other automotive outlets have consistently noted the Copen feels more substantial than its size suggests. The doors close with a solid thunk. The switchgear has a quality feel.

Excellent parts availability. Daihatsu built over 56,000 L880K Copens and the LA400K remains in production. Parts are readily available through Amayama and Megazip. This is a massive advantage over rarer kei sports cars like the AZ-1.

Strong community support. Copen owner communities are active worldwide. The UK market saw official sales for six years, building a thriving aftermarket and knowledge base. Copenworld.com is the largest English language forum, and the kei vehicle subreddit has regular Copen content.

Cons

Front wheel drive limits sporting appeal. The Beat is mid engine, rear wheel drive. The Cappuccino is front engine, rear wheel drive. The Copen sends power to the front wheels. For parking lot runs and back road fun it is perfectly capable, but the driving purists who chase oversteer will always rank it behind its rear drive rivals.

Heavy for a kei car. At 1,852 lbs, the L880K is nearly 200 lbs heavier than a Beat and about 100 lbs heavier than a Cappuccino. That retractable hardtop mechanism adds real weight. You feel it in transitions and under braking.

Trunk space disappears with the top down. The hardtop stows in the trunk. Roof down, you have room for a laptop bag and not much else. Plan your grocery runs for roof up days.

The 4 speed automatic is awful. If you buy an L880K with the 4AT, you are getting the worst version of the car. Sluggish shifts, poor fuel economy, and it robs the engine of its character. The 5 speed manual is the only correct choice for the first generation.

63 hp is still 63 hp. Kei regulations cap output at 64 PS across the board. The turbo makes the power delivery easier than a naturally aspirated car, but you are still working with 63 hp in a 1,850 lb car. Highway merging requires commitment and planning, especially with passengers.

Common Modifications

The Copen aftermarket is well developed, especially in Japan and the UK. Nengun Performance stocks a wide range of L880K parts direct from Japan.

• Boost controller: The cheapest and most effective power mod. An HKS EVC or GReddy Profec controller lets you safely raise boost pressure from the stock 0.7 bar. Running 0.9 to 1.0 bar with stock internals is common and adds roughly 10 to 15 hp. Budget $200 to $400.
• ECU tune: A piggyback ECU or full remap optimizes fuel and ignition maps for increased boost. D Sport (Daihatsu's performance division) sells a plug and play sports ECU for the L880K. Budget $500 to $900.
• Exhaust system: A catback or full turbo back exhaust reduces backpressure and adds a surprisingly aggressive note from the tiny four cylinder. HKS, Fujitsubo, and 5Zigen all make L880K specific systems. Budget $400 to $800.
• Intercooler upgrade: The stock top mount intercooler heat soaks quickly in traffic. A front mount intercooler kit drops intake temps significantly and supports higher boost levels. Budget $600 to $1,000.
• Coilovers: BC Racing makes L880K specific V1 series coilovers with 44mm pistons. The stock suspension is comfortable but soft. Coilovers transform the handling. Budget $800 to $1,200.
• Wheels and tires: The stock 15 inch wheels are fine, but lightweight 15 or 16 inch aftermarket wheels from RAYS, Enkei, or Work reduce unsprung weight. Budget $800 to $1,600 for a set.
• LED headlight conversion: Factory headlights are dim. An LED H4 conversion kit dramatically improves night visibility. Budget $40 to $80.
• Turbo upgrade: HKS makes a bolt on turbine kit for the L880K that replaces the stock turbo with a larger unit. Paired with supporting mods (injectors, ECU, intercooler), builds pushing 100+ hp are documented. Budget $2,000 to $3,500 for the full setup.
• Short shifter: Tightens up the already good 5 speed manual shift action. D Sport and aftermarket options available. Budget $100 to $200.

Known Issues and Maintenance Tips

• Turbo health depends on oil quality. The tiny turbo in the JB-DET spins at extremely high RPM and runs hot. The microscopic bearings are sensitive to oil contamination and degradation. Change oil every 3,000 miles with quality synthetic. This is not optional. Turbo failure from neglected oil changes is the number one mechanical issue on used Copens. Let the engine idle for 30 seconds before shutting off after hard driving to let the turbo cool down.
• Rust is the biggest structural threat. The L880K is prone to corrosion, particularly in the rear wheel arches, boot floor, sill panels, and around the roof mechanism mounts. Japanese domestic market cars are generally better than UK market cars (no road salt in most of Japan), but always inspect thoroughly. See our pre purchase checklist for what to look for.
• Roof hydraulic pump and seals. The retractable hardtop mechanism is generally reliable, but the hydraulic pump can weaken with age. Symptoms include slow operation or the roof stopping mid cycle. The boot area where the roof motors live is prone to water ingress. Lift the carpet in the rear and check for standing water or corrosion. Replacing hydraulic lines or the pump runs $300 to $800 depending on the issue.
• Timing chain stretch (JB-DET). The L880K uses a timing chain, not a belt. Chains last longer but can stretch over time, especially with poor oil maintenance. A stretched chain causes a rattling noise on cold start and can eventually skip teeth. Listen for chain noise on any used Copen. Chain replacement is a $500 to $1,000 job.
• Window regulator failure. The power windows on the L880K use cable type regulators that can fail. Symptoms include slow operation or the window dropping into the door. Replacement regulators are available and the job takes about two hours.
• Clutch wear (manual models). The lightweight flywheel and small clutch disc mean clutch life varies wildly depending on driving style. Expect replacement between 60,000 and 100,000 km. Budget $400 to $700 for a clutch kit and labor.
• CV joint boots. Front wheel drive plus low ground clearance means the CV boots take abuse. Inspect them at every oil change. A torn boot leads to a failed CV joint quickly. Boots are cheap ($20 to $40 each); full axle replacement is not ($200 to $400).

Use Megazip parts diagrams to identify correct part numbers before ordering replacement components.

Price Guide

The L880K is the relevant generation for US buyers eyeing the 2027 import window. Prices below reflect Japanese auction and export market values. Track current listings on Goo-net Exchange and Bring a Trailer (for already imported examples).

L880K (2002 to 2012)

• Project cars (high mileage, cosmetic wear, needs work): $6,000 to $9,000
• Clean drivers (good condition, moderate mileage, sorted): $9,000 to $15,000
• Excellent examples (low mileage, documented history): $15,000 to $20,000
• 10th Anniversary Edition or Ultimate Edition: Add $2,000 to $4,000 premium
• Manual transmission premium over automatic: $1,000 to $2,000

LA400K (2014 to Present)

• Standard Robe/Cero/XPLAY: $14,000 to $20,000 (FOB Japan)
• GR Sport: $20,000 to $25,000 (FOB Japan)

These LA400K prices are FOB (free on board) from Japan. Add $2,000 to $4,000 for shipping, 2.5% customs duty, and compliance costs. Note that LA400K models are not yet eligible for US import under the 25 year rule. They are available in countries without age restrictions.

Budget for the import process itself: $1,500 to $3,000 for shipping, customs brokerage, and port handling. Our complete import guide walks through every step.

L880K vs LA400K: Which to Buy

This is a generational divide with clear trade offs.

The L880K is the charming one. The four cylinder JB-DET is smoother and more characterful than the three cylinder KF-VET. The exterior design is curvier, more cohesive, and has aged gracefully. The aftermarket is mature with decades of development. And critically for US buyers, L880K models begin hitting 25 year eligibility in 2027. If you want a Copen in America, the L880K is your path.

The LA400K is the better car on paper. The D Frame chassis is stiffer. The CVT with paddle shifters is surprisingly good (unlike the terrible L880K 4AT). The Dress Formation panel system is a genuinely clever idea. The GR Sport variant with its Torsen LSD and BBS wheels is the most focused Copen ever made. Build quality and refinement are improved across the board.

For the driving enthusiast buying today (outside the US), the LA400K GR Sport with the manual transmission is the peak Copen. For US buyers planning an import, the L880K 5 speed manual in clean condition is the smart money. Early 2002 to 2003 cars will be first eligible, so those model years will command the highest premiums initially.

If you are debating between the Copen and other kei sports cars, the choice comes down to priorities. Want rear wheel drive purity? Get a Cappuccino or Beat. Want the convertible experience with weather tight hardtop security? The Copen is the only answer.

Insurance

Hagerty is the first call for insuring any imported kei sports car, including the Copen. Their agreed value collector policies protect your investment and the claims process is straightforward for Japanese imports. Standard carriers can write Copen policies but expect questions about the vehicle's origin and parts availability. For a detailed breakdown of costs, providers, and policy types, read our kei vehicle insurance guide.

Where to Buy

• Specialist importers: Japanese Classics and Duncan Imports handle kei vehicle imports regularly. Contact them about sourcing a Copen as 2027 eligibility approaches. Oiwa Garage is another strong option for parts and sourcing.
• Japanese auction services: Browse inventory on Goo-net Exchange or use a buying service to bid at USS, TAA, or HAA auctions. Search for chassis code L880K. Budget $1,500 to $3,000 for shipping from Japan plus 2.5% customs duty.
• UK market cars: The Copen was officially sold in the UK from 2004 to 2010. These right hand drive cars are available through UK dealers and private sellers. UK market cars tend to have more rust than JDM examples due to road salt.
• Domestic resale: Already imported Copens appear on Facebook Marketplace, Craigslist, Cars and Bids, and occasionally Bring a Trailer. Prices carry a premium over direct import but you skip the import process entirely.
• Community: Copenworld.com is the largest English language Copen forum. Private sales appear there regularly, often from long term enthusiast owners who have maintained their cars properly.

Browse our dealer directory to find kei vehicle importers in your state.

Frequently Asked Questions