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Engine | Fuel Type | Transmission | Miles Per Gallon | City | Hwy |
| ARMORED DEVILLE |
| 8 cyl., 4.6 L | Regular | Auto(L4) | 14 | 20 |
| CTS |
| 6 cyl., 3.2 L | Premium | Auto(L5) | 18 | 25 |
| 6 cyl., 3.2 L | Premium | Manual(M5) | 19 | 26 |
| 6 cyl., 3.6 L | Regular | Auto(L5) | 18 | 28 |
| 8 cyl., 5.7 L | Premium | Manual(M6) | 16 | 25 |
| DEVILLE |
| 8 cyl., 4.6 L | Regular | Auto(L4) | 18 | 26 |
| 8 cyl., 4.6 L | Regular | Auto(L4) | 18 | 26 |
| ESCALADE 2WD |
| 8 cyl., 5.3 L | Regular | Auto(L4) | 14 | 18 |
| ESCALADE AWD |
| 8 cyl., 6 L | Regular | Auto(L4) | 13 | 17 |
| ESCALADE ESV AWD |
| 8 cyl., 6 L | Regular | Auto(L4) | 13 | 17 |
| ESCALADE EXT AWD |
| 8 cyl., 6 L | Regular | Auto(L4) | 13 | 17 |
| FUNERAL COACH/HEARSE |
| 8 cyl., 4.6 L | Regular | Auto(L4) | 14 | 20 |
| LIMOUSINE |
| 8 cyl., 4.6 L | Regular | Auto(L4) | 15 | 21 |
| SEVILLE |
| 8 cyl., 4.6 L | Regular | Auto(L4) | 18 | 26 |
| 8 cyl., 4.6 L | Regular | Auto(L4) | 18 | 26 |
| SRX 2WD |
| 6 cyl., 3.6 L | Premium | Auto(L5) | 16 | 23 |
| 8 cyl., 4.6 L | Premium | Auto(L5) | 15 | 21 |
| SRX AWD |
| 6 cyl., 3.6 L | Premium | Auto(L5) | 16 | 22 |
| 8 cyl., 4.6 L | Premium | Auto(L5) | 15 | 20 |
| XLR |
| 8 cyl., 4.6 L | Premium | Auto(L5) | 17 | 25 |
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