6BA-GJEFW · DBA-GJEFW
Mazda Mazda6 GJEFW specs
GJEFW is the model code of the Mazda Mazda6 / Atenza. Japan’s transport ministry lists it in its fuel economy lists from 2013–2024 under 2 model types 6BA-GJEFW, DBA-GJEFW. A genuine car’s chassis number starts GJEFW-.
GJEFW at a glance
- Make
- Mazda
- Model
- Mazda6, Atenza
- Model code
- GJEFW
- Model types
- 6BA-GJEFW, DBA-GJEFW
- In MLIT’s lists
- 2013–2024
- Engines
- PE 1,997 cc petrol
- Gearboxes
- 6-speed automatic
- Drive
- front-wheel drive
- Kerb weight
- 1,450–1,530 kg
- Official fuel economy
- 15–17.4 km/L (42–49 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.
6BA-GJEFW
Listed 2019–2024. The 6BA prefix (our explanation, not MLIT’s) means petrol passenger car certified to Japan’s 2018 emissions rules, 75% below their limits. Check 6BA-GJEFW against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| PE1,997 cc petrol | 6-speed automatic | front-wheel drive | 1,530 kg | 5 | 16.6 km/L47 mpg, Japanese JC08 test | 2019–2024 |
| PE1,997 cc petrol | 6-speed automatic | front-wheel drive | 1,530 kg | 5 | 15 km/L42 mpg, WLTC test | 2019–2024 |
DBA-GJEFW
Listed 2013–2018. The DBA prefix (our explanation, not MLIT’s) means petrol passenger car certified to Japan’s 2005 emissions rules, 75% below their limits. Check DBA-GJEFW against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| PE1,997 cc petrol | 6-speed automatic | front-wheel drive | 1,450–1,470 kg | 5 | 17.4 km/L49 mpg, Japanese JC08 test | 2013–2018 |
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.
GJEFW build year by chassis number
Japan’s carmakers list the chassis numbers each code was built with every year from 2015. Find the serial below, or use the build year finder.
| Built | Chassis numbers |
|---|---|
| 2015 | GJEFW-200087 to 200690 |
| 2016 | GJEFW-200691 to 200993GJEFW-300001 to 300287 |
| 2017 | GJEFW-300288 to 300782 |
| 2018 | GJEFW-300783 to 300895GJEFW-400001 to 400395 |
| 2019 | GJEFW-400396 to 400679GJEFW-500001 to 500187GJEFW-500189 to 500197 |
| 2020 | GJEFW-500188 to 500418GJEFW-550001 to 550094 |
| 2021 | GJEFW-550095 to 550400 |
| 2022 | GJEFW-550401 to 550668GJEFW-600001 to 600002 |
| 2023 | GJEFW-600003 to 600138 |
| 2024 | GJEFW-600139 to 600186 |
From the JAMA chassis number lists: 車台番号一覧表. We keep only the chassis code, serial ranges and year. JAMA calls them reference information, not a certificate.
Check a GJEFW before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start GJEFW-, 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 Mazda Mazda6 model codes
Questions
What engine does the GJEFW have?
MLIT lists the Mazda Mazda6 / Atenza GJEFW with PE 1,997 cc petrol.
What fuel economy does the GJEFW get?
Officially between 15 and 17.4 km/L (about 42–49 mpg), depending on the version, on Japan’s own tests. Real-world figures are usually lower, especially against the older 10-15 mode test.
How heavy is the GJEFW?
Between 1,450 and 1,530 kg kerb weight, depending on the version.
Is 6BA-GJEFW the same as GJEFW?
Yes. 6BA-GJEFW is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and GJEFW is the model code. The chassis number starts with GJEFW-.
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 Mazda 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.