CBA-NCP31 · UA-NCP31
Toyota bB NCP31 specs
NCP31 is the model code of the Toyota bB. Japan’s transport ministry lists it in its fuel economy lists from 2004–2006 under 2 model types CBA-NCP31, UA-NCP31. A genuine car’s chassis number starts NCP31-.
NCP31 at a glance
- Make
- Toyota
- Model
- bB
- Model code
- NCP31
- Model types
- CBA-NCP31, UA-NCP31
- In MLIT’s lists
- 2004–2006
- Engines
- 1NZ 1,496 cc petrol
- Gearboxes
- 4-speed automatic
- Drive
- front-wheel drive
- Kerb weight
- 1,070–1,090 kg
- Official fuel economy
- 16 km/L (45 mpg)
Fuel economy is from Japan’s official tests and is usually better than you’ll see on UK roads. MLIT doesn’t list power or torque.
CBA-NCP31
Listed 2004–2006. The CBA prefix (our explanation, not MLIT’s) means petrol passenger car certified to Japan’s 2005 emissions rules, 50% below their limits. Check CBA-NCP31 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| 1NZ1,496 cc petrol | 4-speed automatic | front-wheel drive | 1,070–1,090 kg | — | 16 km/L45 mpg, Japanese 10-15 mode test | 2004–2006 |
UA-NCP31
Listed 2004. The UA prefix (our explanation, not MLIT’s) means certified to Japan’s 2000 emissions rules, 75% below their limits. Check UA-NCP31 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| 1NZ1,496 cc petrol | 4-speed automatic | front-wheel drive | 1,070–1,090 kg | — | 16 km/L45 mpg, Japanese 10-15 mode test | 2004 |
Each row is one version as MLIT lists it. A version can appear twice when MLIT gave figures on two tests that year. Low-emission stars and trim names aren’t shown. MLIT gives fuel economy in km/L; the mpg figures are our conversion to UK gallons. Japanese tests are gentler than real UK driving, so expect less.
Check an NCP31 before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start NCP31-, and the engine and gearbox should match one of the versions above. Our free check reads the UK MOT history and compares it with the chassis code.
Other Toyota bB model codes
Questions
What engine does the NCP31 have?
MLIT lists the Toyota bB NCP31 with 1NZ 1,496 cc petrol.
What fuel economy does the NCP31 get?
Officially 16 km/L (about 45 mpg), on Japan’s own tests. Real-world figures are usually lower, especially against the older 10-15 mode test.
How heavy is the NCP31?
Between 1,070 and 1,090 kg kerb weight, depending on the version.
Is CBA-NCP31 the same as NCP31?
Yes. CBA-NCP31 is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and NCP31 is the model code. The chassis number starts with NCP31-.
About these figures
The model types, engine codes, capacities, gearboxes, drive, weights, seats and km/L figures are copied from MLIT’s yearly lists of cars on sale in Japan each March, so “listed” years are list years, not exact production dates. The English model names, mpg conversions, emissions code explanations and chassis number matching are ours. Lists before 2013 were printed as PDFs that we read by machine; where an older list gives an engine code that doesn’t match its capacity, we’ve used the figure the same model type has in other years. Check anything that matters against the car’s own papers. Spotted a mistake? Email [email protected]. All Toyota model codes.
Source: Ministry of Land, Infrastructure, Transport and Tourism (MLIT), Japan, fuel economy lists 2004–2026, used under the Public Data License 1.0. Edited and translated by JDM History.