[Code of Federal Regulations]
[Title 40, Volume 27]
[Revised as ofJuly 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR600.209-95]

[Page 890-891]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 600--FUEL ECONOMY OF MOTOR VEHICLES--Table of Contents
 
   Subpart C--Fuel Economy Regulations for 1977 and Later Model Year 
       Automobiles--Procedures for Calculating Fuel Economy Values
 
Sec. 600.209-95  Calculation of fuel economy values for labeling.

    (a) For the purposes of calculating the city model type fuel economy 
value for labeling the manufacturer shall:
    (1)(i) For general labels for gasoline-fueled, diesel-fueled, 
alcohol-fueled, and natural gas-fueled automobiles multiply the city 
model type fuel economy value determined in Sec. 600.207 (b), by 0.90, 
rounding the product to the nearest whole mpg; or
    (ii) For general labels for alcohol dual fuel and natural gas dual 
fuel automobiles:
    (A) Multiply the city model type fuel economy calculated from the 
tests performed using gasoline or diesel test fuel as determined in 
Sec. 600.207 (b)(5)(i) by 0.90, rounding the product to the nearest 
whole mpg; and
    (B) Multiply the city model type fuel economy calculated from the 
tests performed using alcohol or natural gas test fuel as determined in 
Sec. 600.207 (b)(5)(ii) by 0.90, rounding the product to the nearest 
whole mpg; or
    (2)(i) For specific labels for gasoline-fueled, diesel-fueled, 
alcohol-fueled, and natural gas-fueled automobiles, multiply the city 
model type fuel economy value determined in Sec. 600.206 (a)(2)(iii), by 
0.90, rounding the product to the nearest whole mpg; or
    (ii) For specific labels for alcohol dual fuel and natural gas dual 
fuel automobiles:
    (A) Multiply the city model type fuel economy calculated from the 
tests performed using gasoline or diesel test fuel as determined in 
Sec. 600.206 (a)(2)(iii) and (4)(i) by 0.90, rounding the product to the 
nearest whole mpg; and
    (B) Multiply the city model type fuel economy calculated from the 
tests performed using alcohol or natural gas test fuel as determined in 
Sec. 600.206 (a)(2)(iii) and (4)(ii) by 0.90, rounding the product to 
the nearest whole mpg.
    (b) For the purposes of calculating the highway model type fuel 
economy value for labeling the manufacturer shall:
    (1)(i) For general labels for gasoline-fueled, diesel-fueled, 
alcohol-fueled, and natural gas-fueled automobiles, multiply the highway 
model type fuel economy value determined in Sec. 600.207 (b), by 0.78, 
rounding the product to the nearest whole mpg; or
    (ii) For general labels for alcohol dual fuel and natural gas dual 
fuel automobiles:
    (A) Multiply the highway model type fuel economy calculated from the 
tests performed using gasoline or diesel test fuel as determined in 
Sec. 600.207 (b)(5)(i) by 0.78, rounding the product to the nearest 
whole mpg; and
    (B) Multiply the highway model type fuel economy calculated from the 
tests performed using alcohol or natural gas test fuel as determined in 
Sec. 600.207 (b)(5)(ii) by 0.78, rounding the product to the nearest 
whole mpg; or
    (2)(i) For specific labels for gasoline-fueled, diesel-fueled, 
alcohol-fueled, and natural gas-fueled automobiles, multiply the highway 
model type fuel economy value determined in Sec. 600.206 (a)(iii), by 
0.78, rounding the product to the nearest whole mpg; or

[[Page 891]]

    (ii) For specific labels for alcohol dual fuel and natural gas dual 
fuel automobiles:
    (A) Multiply the highway model type fuel economy calculated from the 
tests performed using gasoline or diesel test fuel as determined in 
Sec. 600.206 (a)(2)(iii) and (4)(i) by 0.78, rounding the product to the 
nearest whole mpg; and
    (B) Multiply the highway model type fuel economy calculated from the 
tests performed using alcohol or natural gas test fuel as determined in 
Sec. 600.206 (a)(2)(iii) and (4)(ii) by 0.78, rounding the product to 
the nearest whole mpg.
    (c) If the resulting city value determined in paragraph (a) of this 
section exceeds the resulting highway value determined in paragraph (b) 
of this section, the city value will be set equal to the highway value.
    (d) For the purposes of calculating the combined fuel economy for a 
model type, to be used in determining annual fuel costs under 
Sec. 600.307, the manufacturer shall (except as provided for in 
paragraph (d)(2) of this section):
    (1)(i) For gasoline-fueled, diesel-fueled, alcohol-fueled, and 
natural gas-fueled automobiles, harmonically average the unrounded city 
and highway values, determined in paragraphs (a)(1)(i) and (b)(1)(i), or 
(a)(2)(i) and (b)(2)(i) of this section weighted 0.55 and 0.45 
respectively, and round to the nearest whole mpg. (An example of this 
calculation procedure appears in appendix II of this part); or
    (ii) For alcohol dual fuel and natural gas dual fuel automobiles, 
harmonically average the unrounded city and highway values from the 
tests performed using gasoline or diesel test fuel as determined in 
paragraphs (a)(1)(ii)(A) and (b)(1)(ii)(A), or (a)(2)(ii)(A) and 
(b)(2)(ii)(A) of this section.
    (2) If the resulting city value determined in paragraph (a) of this 
section exceeds the resulting highway value determined in paragraph (b) 
of this section, the combined fuel economy will be set equal to the 
highway value, rounded to the nearest whole mpg.

[59 FR 39656, Aug. 3, 1994]

    Effective Date Note: At 59 FR 39656, Aug. 3, 1994, Sec. 600.209-95 
was added. This section contains information collection and 
recordkeeping requirements and will not become effective until approval 
has been given by the Office of Management and Budget.