DBA-GRX121
Toyota Mark X GRX121 specs
GRX121 is the model code of the Toyota Mark X. Japan’s transport ministry lists it in its fuel economy lists from 2005–2009 under the model type DBA-GRX121. A genuine car’s chassis number starts GRX121-.
Buying one? Read our Toyota Mark X X120 import guide for known problems, auction sheet notes and what to check.
GRX121 at a glance
- Make
- Toyota
- Model
- Mark X
- Model code
- GRX121
- Model types
- DBA-GRX121
- In MLIT’s lists
- 2005–2009
- Engines
- 3GR 2,994 cc petrol
- Gearboxes
- 6-speed automatic
- Drive
- rear-wheel drive
- Kerb weight
- 1,520–1,560 kg
- Official fuel economy
- 11.8 km/L (33 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.
DBA-GRX121
Listed 2005–2009. 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-GRX121 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| 3GR2,994 cc petrol | 6-speed automatic | rear-wheel drive | 1,520–1,560 kg | 5 | 11.8 km/L33 mpg, Japanese 10-15 mode test | 2005–2009 |
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 a GRX121 before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start GRX121-, 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 Mark X model codes
Questions
What engine does the GRX121 have?
MLIT lists the Toyota Mark X GRX121 with 3GR 2,994 cc petrol.
What fuel economy does the GRX121 get?
Officially 11.8 km/L (about 33 mpg), on Japan’s own tests. Real-world figures are usually lower, especially against the older 10-15 mode test.
How heavy is the GRX121?
Between 1,520 and 1,560 kg kerb weight, depending on the version.
Is DBA-GRX121 the same as GRX121?
Yes. DBA-GRX121 is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and GRX121 is the model code. The chassis number starts with GRX121-.
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.