Emission Comparison: Prius / HS250h / Insight / Civic Hybrid / Jetta (Gas+TDI) / WRX STI

[usbseawolf2000]

Non-Methane Organic Gases


Carbon Monoxide


Nitrogen Oxide


Highway Nitrogen Oxide


Overall


Summary:

• Jetta gasoline is cleaner than TDI despite heavy marketing of the "Clean Diesel".
• Civic Hybrid is generally cleaner than the non-hybrid version, except for CO.
• Lexus HS 250h is cleaner than the Insight, except highway NOx.
• Prius is the king of clean car.
• Subaru WRX STI is the dirtiest of all. It is 10x to 27x dirtier than the Prius due to turbo.
• Jetta TDI is cleaner than WRX STI but STI has more than 2x hp.

Unit:

NMOG - g/mi
CO - g/mi
NOx - g/mi
HCHO mg/mi
PM - g/mi
Hwy NOx - g/mi

[malauber]

What units are these measurements recorded in?

[Tideland Prius]

Cool. Where'd you get the info from? Can you imagine before we had ULEV cars? I remember our Corolla was a LEV and then our Camry was ULEV and the Prius was SULEV/PZEV-AT lol... keep going up the scale.

[usbseawolf2000]

Originally Posted by malauber

What units are these measurements recorded in?

Everything is in gram per mile except HCHO but it is always N/A.

[usbseawolf2000]

Originally Posted by Tideland Prius

Cool. Where'd you get the info from? Can you imagine before we had ULEV cars? I remember our Corolla was a

I got it off CARB web site.

Subject Top Page: On-Road New Vehicle & Engine Certification Program

[MaggieMay]

Thanks for sharing this - can't wait to show it to my brother who thinks 'clean deisel is not an oxymoron.

[usbseawolf2000]

Hybrid Models Comparison

It is surprising to see Ford Fusion hybrid not as clean as RX 450h SUV! Toyota and Lexus hybrids are among the cleanest cars available.

Camry hybrid produce no Nitrogen Oxide? That's the data straight from CARB.

[a_gray_prius]

Its awesome you dropped the STi in there

[a priori]

Thank you for sharing this data with us (and for providing a reference).

How about comparing other popular vehicles, though? Is there really that much difference among the Prius, HCH, Insight and FFH when you compare them all to regular Camry or Chevy Malibu or a Ford F150 or a Kia Something?

[carz89]

How does the Hummer compare? Of course everyone knows that the hummer is cleaner overall on the environment than the Prius.

It's interesting that two of the primary market competitors of the Prius, the 2010 Insight and the Ford Fusion, put out an order of magnitude more pollutants than the new Prius.