{"data":{"id":"us/40-cfr-appendix-i-to-part-600","jurisdiction":"us","citation":"40 CFR Appendix I to Part 600","heading":"Appendix I to Part 600—Highway Fuel Economy Driving Schedule","body":"[ speed (mph) vs time (sec) ]\nSEC MPH SEC MPH SEC MPH SEC MPH SEC MPH SEC MPH SEC MPH SEC MPH\n0 Sample On 50 38.6 100 48.5 150 44.1 200 43.4 250 48.0 300 33.4 350 59.0\n1 0.0 51 39.3 101 48.8 151 44.3 201 43.2 251 48.0 301 35.6 351 58.9\n2 0.0 52 40.0 102 49.1 152 44.4 202 43.2 252 48.0 302 37.5 352 58.8\n3 2.0 53 40.7 103 49.2 153 44.6 203 43.1 253 48.1 303 39.1 353 58.6\n4 4.9 54 41.4 104 49.1 154 44.7 204 43.0 254 48.2 304 40.2 354 58.4\n5 8.1 55 42.2 105 49.1 155 44.9 205 43.0 255 48.2 305 41.1 355 58.2\n6 11.3 56 42.9 106 49.0 156 45.2 206 43.1 256 48.1 306 41.8 356 58.1\n7 14.5 57 43.5 107 49.0 157 45.7 207 43.4 257 48.6 307 42.4 357 58.0\n8 17.3 58 44.0 108 49.1 158 45.9 208 43.9 258 48.9 308 42.8 358 57.9\n9 19.6 59 44.3 109 49.2 159 46.3 209 44.0 259 49.1 309 43.3 359 57.6\n10 21.8 60 44.5 110 49.3 160 46.8 210 43.5 260 49.1 310 43.8 360 57.4\n11 24.0 61 44.8 111 49.4 161 46.9 211 42.6 261 49.1 311 44.3 361 57.2\n12 25.8 62 44.9 112 49.5 162 47.0 212 41.5 262 49.1 312 44.7 362 57.1\n13 27.1 63 45.0 113 49.5 163 47.1 213 40.7 263 49.1 313 45.0 363 57.0\n14 28.0 64 45.1 114 49.5 164 47.6 214 40.0 264 49.0 314 45.2 364 57.0\n15 29.0 65 45.4 115 49.4 165 47.9 215 40.0 265 48.9 315 45.4 365 56.9\n16 30.0 66 45.7 116 49.1 166 48.0 216 40.3 266 48.2 316 45.5 366 56.9\n17 30.7 67 46.0 117 48.9 167 48.0 217 41.0 267 47.7 317 45.8 367 56.9\n18 31.5 68 46.3 118 48.6 168 47.9 218 42.0 268 47.5 318 46.0 368 57.0\n19 32.2 69 46.5 119 48.4 169 47.8 219 42.7 269 47.2 319 46.1 369 57.0\n20 32.9 70 46.8 120 48.1 170 47.3 220 43.1 270 46.7 320 46.5 370 57.0\n21 33.5 71 46.9 121 47.7 171 46.7 221 43.2 271 46.2 321 46.8 371 57.0\n22 34.1 72 47.0 122 47.4 172 46.2 222 43.4 272 46.0 322 47.1 372 57.0\n23 34.6 73 47.1 123 47.3 173 45.9 223 43.9 273 45.8 323 47.7 373 57.0\n24 34.9 74 47.2 124 47.5 174 45.7 224 44.3 274 45.6 324 48.3 374 57.0\n25 35.1 75 47.3 125 47.8 175 45.5 225 44.7 275 45.4 325 49.0 375 57.0\n26 35.7 76 47.2 126 47.9 176 45.4 226 45.1 276 45.2 326 49.7 376 57.0\n27 35.9 77 47.1 127 48.0 177 45.3 227 45.4 277 45.0 327 50.3 377 56.9\n28 35.8 78 47.0 128 47.9 178 45.0 228 45.8 278 44.7 328 51.0 378 56.8\n29 35.3 79 46.9 129 47.9 179 44.0 229 46.5 279 44.5 329 51.7 379 56.5\n30 34.9 80 46.9 130 47.9 180 43.1 230 46.9 280 44.2 330 52.4 380 56.2\n31 34.5 81 46.9 131 48.0 181 42.2 231 47.2 281 43.5 331 53.1 381 56.0\n32 34.6 82 47.0 132 48.0 182 41.5 232 47.4 282 42.8 332 53.8 382 56.0\n33 34.8 83 47.1 133 48.0 183 41.5 233 47.3 283 42.0 333 54.5 383 56.0\n34 35.1 84 47.1 134 47.9 184 42.1 234 47.3 284 40.1 334 55.2 384 56.1\n35 35.7 85 47.2 135 47.3 185 42.9 235 47.2 285 38.6 335 55.8 385 56.4\n36 36.1 86 47.1 136 46.0 186 43.5 236 47.2 286 37.5 336 56.4 386 56.7\n37 36.2 87 47.0 137 43.3 187 43.9 237 47.2 287 35.8 337 56.9 387 56.9\n38 36.5 88 46.9 138 41.2 188 43.6 238 47.1 288 34.7 338 57.0 388 57.1\n39 36.7 89 46.5 139 39.5 189 43.3 239 47.0 289 34.0 339 57.1 389 57.3\n40 36.9 90 46.3 140 39.2 190 43.0 240 47.0 290 33.3 340 57.3 390 57.4\n41 37.0 91 46.2 141 39.0 191 43.1 241 46.9 291 32.5 341 57.6 391 57.4\n42 37.0 92 46.3 142 39.0 192 43.4 242 46.8 292 31.7 342 57.8 392 57.2\n43 37.0 93 46.5 143 39.1 193 43.9 243 46.9 293 30.6 343 58.0 393 57.0\n44 37.0 94 46.9 144 39.5 194 44.3 244 47.0 294 29.6 344 58.1 394 56.9\n45 37.0 95 47.1 145 40.1 195 44.6 245 47.2 295 28.8 345 58.4 395 56.6\n46 37.0 96 47.4 146 41.0 196 44.9 246 47.5 296 28.4 346 58.7 396 56.3\n47 37.1 97 47.7 147 42.0 197 44.8 247 47.9 297 28.6 347 58.8 397 56.1\n48 37.3 98 48.0 148 43.1 198 44.4 248 48.0 298 29.5 348 58.9 398 56.4\n49 37.8 99 48.2 149 43.7 199 43.9 249 48.0 299 31.4 349 59.0 399 56.7\nSEC MPH SEC MPH SEC MPH SEC MPH SEC MPH SEC MPH SEC MPH SEC MPH\n400 57.1 450 58.2 500 54.7 550 55.8 600 48.3 650 50.2 700 54.2 750 26.8\n401 57.5 451 58.1 501 54.6 551 55.6 601 48.0 651 50.7 701 54.5 751 24.5\n402 57.8 452 58.0 502 54.4 552 55.4 602 47.9 652 51.1 702 54.8 752 21.5\n403 58.0 453 58.0 503 54.3 553 55.2 603 47.8 653 51.7 703 55.0 753 19.5\n404 58.0 454 58.0 504 54.3 554 55.1 604 47.7 654 52.2 704 55.5 754 17.4\n405 58.0 455 58.0 505 54.2 555 55.0 605 47.9 655 52.5 705 55.9 755 15.1\n406 58.0 456 58.0 506 54.1 556 54.9 606 48.3 656 52.1 706 56.1 756 12.4\n407 58.0 457 58.0 507 54.1 557 54.6 607 49.0 657 51.6 707 56.3 757 9.7\n408 58.0 458 57.9 508 54.1 558 54.4 608 49.1 658 51.1 708 56.4 758 7.0\n409 57.9 459 57.9 509 54.0 559 54.2 609 49.0 659 51.0 709 56.5 759 5.0\n410 57.8 460 58.0 510 54.0 560 54.1 610 48.9 660 51.0 710 56.7 760 3.3\n411 57.7 461 58.1 511 54.0 561 53.8 611 48.0 661 51.1 711 56.9 761 2.0\n412 57.7 462 58.1 512 54.0 562 53.4 612 47.1 662 51.4 712 57.0 762 0.7\n413 57.8 463 58.2 513 54.0 563 53.3 613 46.2 663 51.7 713 57.3 763 0.0\n414 57.9 464 58.3 514 54.0 564 53.1 614 46.1 664 52.0 714 57.7 764 0.0\n415 58.0 465 58.3 515 54.0 565 52.9 615 46.1 665 52.2 715 58.2 765 Sample Off\n416 58.1 446 58.3 516 54.0 566 52.6 616 46.2 666 52.5 716 58.8\n417 58.4 467 58.2 517 54.1 567 52.4 617 46.9 667 52.8 717 59.1\n418 58.9 468 58.1 518 54.2 568 52.2 618 47.8 668 52.7 718 59.2\n419 59.1 469 58.0 519 54.5 569 52.1 619 49.0 669 52.6 719 59.1\n420 59.4 470 57.8 520 54.8 570 52.0 620 49.7 670 52.3 720 58.8\n421 59.8 471 57.5 521 54.9 571 52.0 621 50.6 671 52.3 721 58.5\n422 59.9 472 57.1 522 55.0 572 52.0 622 51.5 672 52.4 722 58.1\n423 59.9 473 57.0 523 55.1 573 52.0 623 52.2 673 52.5 723 57.7\n424 59.8 474 56.6 524 55.2 574 52.1 624 52.7 674 52.7 724 57.3\n425 59.6 475 56.1 525 55.2 575 52.0 625 53.0 675 52.7 725 57.1\n426 59.4 476 56.0 526 55.3 576 52.0 626 53.6 676 52.4 726 56.8\n427 59.2 477 55.8 527 55.4 577 51.9 627 54.0 677 52.1 727 56.5\n428 59.1 478 55.5 528 55.5 578 51.6 628 54.1 678 51.7 728 56.2\n429 59.0 479 55.2 529 55.6 579 51.4 629 54.4 679 51.1 729 55.5\n430 58.9 480 55.1 530 55.7 580 51.1 630 54.7 680 50.5 730 54.6\n431 58.7 481 55.0 531 55.8 581 50.7 631 55.1 681 50.1 731 54.1\n432 58.6 482 54.9 532 55.9 582 50.3 632 55.4 682 49.8 732 53.7\n433 58.5 483 54.9 533 56.0 583 49.8 633 55.4 683 49.7 733 53.2\n434 58.4 484 54.9 534 56.0 584 49.3 634 55.0 684 49.6 734 52.9\n435 58.4 485 54.9 535 56.0 585 48.7 635 54.5 685 49.5 735 52.5\n436 58.3 486 54.9 536 56.0 586 48.2 6.36 53.6 686 49.5 736 52.0\n437 58.2 487 54.9 537 56.0 587 48.1 637 52.5 687 49.7 737 51.3\n438 58.1 488 55.0 538 56.0 588 48.0 638 50.2 688 50.0 738 50.5\n439 58.0 489 55.0 539 56.0 589 48.0 6.39 48.2 689 50.2 739 49.5\n440 57.9 490 55.0 540 56.0 590 48.1 640 46.5 690 50.6 740 48.5\n441 57.9 491 55.0 541 56.0 591 48.4 641 46.2 691 51.1 741 47.6\n442 57.9 492 55.0 542 56.0 592 48.9 642 46.0 692 51.6 742 46.8\n443 57.9 493 55.0 543 56.0 593 49.0 643 46.0 693 51.9 743 45.6\n444 57.9 494 55.1 544 56.0 594 49.1 644 46.3 694 52.0 744 44.2\n445 58.0 495 55.1 545 56.0 595 49.1 645 46.8 695 52.1 745 42.5\n446 58.1 496 55.0 546 56.0 596 49.0 646 47.5 696 52.4 746 39.2\n447 58.1 497 54.9 547 55.9 597 49.0 647 48.2 697 52.9 747 35.9\n448 58.2 498 54.9 548 55.9 598 48.9 648 48.8 698 53.3 748 32.6\n449 58.2 499 54.8 549 55.9 599 48.6 649 49.5 699 53.7 749 29.3","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER Q—ENERGY POLICY","PART 600—FUEL ECONOMY AND GREENHOUSE GAS EXHAUST EMISSIONS OF MOTOR VEHICLES"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"70f30838d37addf90654b6c49801681d08281b31ed2bddb3c381faf15597d245","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-600.513-08","next":"us/40-cfr-appendix-ii-to-part-600"},"notice":"GroundRules: Original legal text. Not legal advice."}