See also:

Increasing fuel economy
● Accelerate slowly and smoothly. Maintain cruising speeds with a constant accelerator position. ● Drive at moderate speeds on the highway. Driving at high speed lowers fuel economy. ...

Engine serial number
MR20DE QR25DE The number is stamped on the engine as shown. ...

Cube in the Market
Nissan wins the oddball award, even among kooky-looking box-cars, and 28 mpg in the city is impressive. But even urban driving requires an occasional jaunt on the highway — or a road trip to see ...