Daihatsu Mira: common problems, service schedule and fuel economy
What typically goes wrong on the Daihatsu Mira, at what mileage, and what keeping it right involves — from Brimly's Vehicle Knowledge Base, where every fault is checked by a human before publication.
Ask the AI about the Daihatsu Mira- Years
- 2006–2018
- Generations
- 1
- Engines
- 3
- Verified faults
- 9
7th gen (L275/L285) · 2006–2018
0.66 KF (NA) · 58 hp · 0.66 KF (NA, 2011+ CVT) · 52 hp · 0.66 KF turbo (Custom RS) · 64 hp
Known problems
- Critical usually from 0 mi (0 km)
Brake master-cylinder piston cup may crack (2007-07 builds)
Symptoms: foreign matter left in the piston cup during manufacture lets it crack, so braking force can drop
What to do: Ask a dealer whether the chassis number is covered (the campaign is small, about 900 cars); the master cylinder is repaired free. A pedal that sinks slowly under steady pressure is a reason to stop and have the brakes checked.
- Critical usually from 0 mi (0 km)
CVT oil-cooler hose may slip off (2007-04 to 2008-03 builds)
Symptoms: the hose that carries CVT fluid to the cooler can come loose with engine vibration; oil leaks, the car loses drive and, at worst, can catch fire
What to do: Check the chassis number with a dealer; the fix is free. A car with oil under the front or a CVT that suddenly loses drive should be stopped and checked.
- Critical usually from 0 mi (0 km)
Crank-angle sensor coil may break, engine stalls
Symptoms: the coil inside the crank-angle sensor can break from vibration; the engine can stall while driving or refuse to start
What to do: Check the chassis number with a dealer; the sensor is replaced free (a temporary rev limit may be loaded until the part is available). A stall at speed or a no-start with no other cause is worth reporting.
- Critical usually from 0 mi (0 km)
Fuel-pressure pulsation damper may crack and leak fuel (2009 builds)
Symptoms: the damper diaphragm was scratched in manufacture and can crack under fuel-pressure pulses, letting petrol leak in the engine bay
What to do: Ask a dealer whether the chassis number is covered; the part is replaced free. A petrol smell in the engine bay should be checked before driving on.
- Critical usually from 0 mi (0 km)
Fuel-pump impeller may swell and stall the engine (2017-07 to 2018-01 builds)
Symptoms: the resin impeller of the fuel pump was moulded at the wrong density and swells in fuel; it can rub the pump housing, the pump misbehaves and the engine can stall while driving
What to do: Late-built cars (final production year): ask a dealer to check the chassis number; the pump is replaced free.
- Worth watching usually from 0 mi (0 km)
CVT secondary shaft may break after hard launches (CVT cars)
Symptoms: an over-aggressive CVT hydraulic program can overload the secondary shaft when the car is floored just after selecting a gear or the engine is revved and switched off; repeated, the shaft can break and the car cannot move
What to do: Have a dealer reprogram the CVT control unit (free) if the chassis number is covered; avoid abrupt full-throttle launches.
- Worth watching usually from 0 mi (0 km)
Heater blower motor terminals may short and melt (2006-12 to 2007-09 builds)
Symptoms: conductive debris collects on the blower motor power terminal and shorts it; the terminal burns through and the defroster stops working
What to do: Ask a dealer whether the chassis number is covered; the fix is free. Poor defogging in winter with a dead blower is the sign.
- Worth watching usually from 0 mi (0 km)
KF engine: water-pump bearing noise
Symptoms: a squeal after the engine is switched off, then a rattle at idle; left alone the bearing can fail, the pulley can come off, and the engine can overheat
What to do: Listen for a squeal at shutdown; have the pump and belt tension checked, replace the pump at the first rattle and have the belts tensioned to the maker's figure - belts fitted too tight are named as a cause.
- Worth watching usually from 0 mi (0 km)
Mira Van CVT torque-converter bearing wear (2013-10 to 2014-01 builds)
Symptoms: a torque-converter bearing with an uneven sliding surface wears and breaks up; debris causes a noise and, if ignored, the engine can stall when the car stops and refuse to pull away
What to do: Applies to Mira Van with CVT only; have a dealer check the chassis number, the converter is replaced free. A new whine or rattle from the transmission is the early sign.
Service schedule
| Item | Interval | Notes |
|---|---|---|
| Engine oil change | every 6,000 mi (10,000 km) or 6 months | Daihatsu accessory page (daihatsu.co.jp/accessory/mokuteki/fluid.htm, read 2026-10-26): for a kei car 10,000 km or 6 months, whichever comes first; 5,000 km for a turbo car; severe use (rough roads, mountain driving, heavy loads, many short trips) halves it to 5,000 km (turbo 2,500 km). The page calls this "one example", a general kei figure rather than a table for this model - check the maintenance booklet. The Mira Custom RS turbo should use the 5,000 km figure. |
| Engine oil filter | every 12,000 mi (20,000 km) | Daihatsu recommends a new filter at every second oil change (same page); 20,000 km is that rule applied to the 10,000 km oil interval (turbo: 10,000 km). |
| CVT fluid Important | every 31,000 mi (50,000 km) | Daihatsu accessory page: CVT fluid about 50,000 km as a guide; Daihatsu names its own Amix CVT fluid for these cars. Applies to CVT cars only. |
| Automatic transmission fluid (3-speed / 4-speed AT) Important | every 62,000 mi (100,000 km) | Daihatsu accessory page: ATF about 100,000 km as a guide. Only the AT cars; the 5-speed manual and the CVT do not use it. |
| Air filter | — | No interval on the Daihatsu page consulted - follow the maintenance booklet and check it more often on dusty roads. |
| Brake fluid Important | every 24 months | Daihatsu accessory page: replace at every vehicle inspection (shaken) - the first at 3 years, then every 2 years - so 24 months is the recurring figure. |
| Coolant | — | The Daihatsu page gives no interval and says to check the maintenance booklet (and to have the concentration checked in cold regions). |
Manufacturer-declared fuel economy
No manufacturer-declared figures for this model are in the Knowledge Base yet. A figure without the cycle it was measured under is not comparable to anything, so we publish none rather than a number you cannot interpret.
Ask about the Daihatsu Mira
The car is already selected — ask anything. Answers draw on the same verified data as this page. Ten questions a day, no sign-up.
The assistant is answering…
An assistant that knows your own car
In the Brimly app it answers from your car's real mileage, fuel log and service history, not from an average car. Five questions a day free, more with PRO.
Requires iOS 18.1 or later. Free to download, with optional in-app purchases.
That's 10 for today
The free web limit resets tomorrow. In the Brimly app the assistant knows your specific car — its real mileage, fuel log, and service history.
Requires iOS 18.1 or later. Free to download, with optional in-app purchases.
The conversation is stored only in your browser — we don't keep it on our servers.
A starting point, not a diagnosis: this page describes what tends to happen to this model, and a workshop confirms what is happening to your car.
Keep your own Daihatsu Mira on schedule
Brimly logs your fill-ups, mileage and service history on your iPhone, reminds you when service is due, and its AI assistant answers about your car — with its own numbers, not the average Daihatsu Mira's.
Requires iOS 18.1 or later. Free to download, with optional in-app purchases.
Frequently asked
What are the most common Daihatsu Mira problems?
The faults reported most often are: Brake master-cylinder piston cup may crack (2007-07 builds); CVT oil-cooler hose may slip off (2007-04 to 2008-03 builds); Crank-angle sensor coil may break, engine stalls. Symptoms, the mileage each appears at and what to do about it are all above.
How often does the Daihatsu Mira need servicing?
Engine oil change — every 6,000 mi (10,000 km) or 6 months. The full published schedule is above; your car's own service book always takes precedence.
Where does this data come from?
Brimly's Vehicle Knowledge Base — the same verified facts the app's AI assistant answers from. Every fault is written up from public sources and then checked by a human before it is published; nothing here is generated on the fly.