3BA-GSE31 · DBA-GSE31
Lexus IS350 GSE31 specs
GSE31 is the model code of the Lexus IS350. Japan’s transport ministry lists it in its fuel economy lists from 2014–2026 under 2 model types 3BA-GSE31, DBA-GSE31. A genuine car’s chassis number starts GSE31-.
GSE31 at a glance
- Make
- Lexus
- Model
- IS350
- Model code
- GSE31
- Model types
- 3BA-GSE31, DBA-GSE31
- In MLIT’s lists
- 2014–2026
- Engines
- 2GR 3,456 cc petrol
- Gearboxes
- 8-speed automatic
- Drive
- rear-wheel drive
- Kerb weight
- 1,630–1,680 kg
- Official fuel economy
- 9.8–10.7 km/L (28–30 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.
3BA-GSE31
Listed 2021–2026. The 3BA prefix (our explanation, not MLIT’s) means petrol passenger car certified to Japan’s 2018 emissions rules. Check 3BA-GSE31 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| 2GR3,456 cc petrol | 8-speed automatic | rear-wheel drive | 1,660–1,680 kg | 5 | 10.7 km/L30 mpg, WLTC test | 2021–2026 |
DBA-GSE31
Listed 2014–2020. 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-GSE31 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| 2GR3,456 cc petrol | 8-speed automatic | rear-wheel drive | 1,630–1,670 kg | 5 | 9.8–10.4 km/L28–29 mpg, Japanese JC08 test | 2014–2020 |
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.
GSE31 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 | GSE31-5018963 to 5027583 |
| 2016 | GSE31-5027584 to 5029401 |
| 2017 | GSE31-5029402 to 5032543 |
| 2018 | GSE31-5032544 to 5034507 |
| 2019 | GSE31-5034508 to 5035765 |
| 2020 | GSE31-5035766 to 5040448 |
| 2021 | GSE31-5040433 to 5050812 |
| 2022 | GSE31-5050823 to 5062973 |
| 2023 | GSE31-5063015 to 5075196 |
| 2024 | GSE31-5075261 to 5081297 |
| 2025 | GSE31-5081339 to 5094642 |
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 GSE31 before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start GSE31-, 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 Lexus IS350 model codes
Questions
What engine does the GSE31 have?
MLIT lists the Lexus IS350 GSE31 with 2GR 3,456 cc petrol.
What fuel economy does the GSE31 get?
Officially between 9.8 and 10.7 km/L (about 28–30 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 GSE31?
Between 1,630 and 1,680 kg kerb weight, depending on the version.
Is 3BA-GSE31 the same as GSE31?
Yes. 3BA-GSE31 is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and GSE31 is the model code. The chassis number starts with GSE31-.
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 Lexus 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.