---
kind: "section"
citation: "49 C.F.R. § 533.5"
title: "49"
number: "533.5"
heading: "Requirements."
url: "https://uscodex.org/cfr/49/533.5"
---

# §533.5. Requirements.

- (a) Each manufacturer of light trucks shall comply with the following fleet average fuel economy standards, expressed in miles per gallon, in the model year (MY) specified as applicable:
- (b)
  - (1) **For model year 1979, each manufacturer may—**
    - (i) Combine its 2- and 4-wheel drive light trucks and comply with the average fuel economy standard in [paragraph (a)](#a) of this section for 2-wheel drive light trucks; or
    - (ii) **Comply separately with the two standards specified in paragraph (a) of this section.**
  - (2) For model year 1979, the standard specified in [paragraph (a)](#a) of this section for 4-wheel drive light trucks applies only to 4-wheel drive general utility vehicles. All other 4-wheel drive light trucks in that model year shall be included in the 2-wheel drive category for compliance purposes.
- (c) **For model years 1980 and 1981, manufacturers of limited product line light trucks may—**
  - (1) Comply with the separate standard for limited product line light trucks in Table 1 to [paragraph (a)](#a) of this section; or
  - (2) **Comply with the other standards specified in paragraph (a) of this section, as applicable.**
- (d) **For model years 1982-91, each manufacturer may—**
  - (1) Combine its 2- and 4-wheel drive light trucks (segregating captive import and other light trucks) and comply with the combined average fuel economy standard specified in [paragraph (a)](#a) of this section; or
  - (2) Comply separately with the 2-wheel drive standards and the 4-wheel drive standards (segregating captive import and other light trucks) specified in [paragraph (a)](#a) of this section.
- (e) For model year 1992, each manufacturer shall comply with the average fuel economy standard specified in [paragraph (a)](#a) of this section (segregating captive import and other light trucks).
- (f) For each model year 1996 and thereafter, each manufacturer shall combine its captive imports with its other light trucks and comply with the fleet average fuel economy standard in [paragraph (a)](#a) of this section.
- (g) For model years 2008-2010, at a manufacturer's option, a manufacturer's light truck fleet may comply with the fuel economy standard calculated for each model year according to Figure 1 to [paragraph (a)](#a) of this section and the appropriate values in Table 5 to [paragraph (a)](#a) of this section, with said option being irrevocably chosen for that model year and reported as specified in [§ 537.8](/cfr/49/537.8.md) of this chapter.
- (h) For model year 2011, a manufacturer's light truck fleet shall comply with the fleet average fuel economy standard calculated for that model year according to Figure 1 to [paragraph (a)](#a) of this section and the appropriate values in Table 5 to [paragraph (a)](#a) of this section.
- (i) For model years 2012-2016, a manufacturer's light truck fleet shall comply with the fleet average fuel economy standard calculated for that model year according to Figures 2 and 3 to [paragraph (a)](#a) of this section and the appropriate values in Table 6 to [paragraph (a)](#a) of this section.
- (j) For model years 2017-2031, a manufacturer's light truck fleet shall comply with the fleet average fuel economy standard calculated for that model year according to figures 2 and 4 to [paragraph (a)](#a) of this section and the appropriate values in table 7 to [paragraph (a)](#a) of this section.

## Notes

### Amendments

[87 FR 26076, May 2, 2022, as amended at 89 FR 52949, June 24, 2024]

### Authority

Authority: 49 U.S.C. 32902; delegation of authority at 49 CFR 1.95.

### Source

Source: 87 FR 26076, May 2, 2022, unless otherwise noted.

### Amendments

[87 FR 26076, May 2, 2022, as amended at 89 FR 52949, June 24, 2024]