1999 GMC Sierra 1500 MPG
Based on data from 50 vehicles, 2,461 fuel-ups and 641,769 miles of driving, the 1999 GMC Sierra 1500 gets a combined Avg MPG of 13.77 with a 0.13 MPG margin of error.
Below you can see a distribution of the fuel-ups with 34 outliers (1.36%) removed.
Following shows the average MPG of each of the 50 vehicles in the system.
1999 GMC Sierra 1500s For Sale Nearby
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‘99 Sierra
1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
Added Nov 2021 • 68 Fuel-upsProperty of keith_284
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11.5 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
Added Jul 2019 • 28 Fuel-upsProperty of hoffajd
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16.2 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SL 4.3L V6 GAS Automatic 4 Speed
Added Oct 2022 • 39 Fuel-upsProperty of gnatsumder
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12.1 Avg MPG
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99 Sierra
1999 GMC Sierra 1500 SL 4.3L V6 GAS Automatic 4 Speed Standard Cab Pickup
Added Oct 2017 • 159 Fuel-upsProperty of bhagedorn
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11.7 Avg MPG
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Sierra
1999 GMC Sierra 1500 SL 4.3L V6 GAS Automatic 4 Standard Cab Pickup (2 Door)
Added Aug 2015 • 25 Fuel-upsProperty of katjlr
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18.5 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
Added Feb 2018 • 154 Fuel-upsProperty of clintmccoy
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15.6 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
Added Jul 2022 • 11 Fuel-upsProperty of connor7mvl
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14.6 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SLE 4.8L V8 GAS Manual 5 Speed
Added Aug 2023 • 5 Fuel-upsProperty of cohenkoch1
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15.5 Avg MPG
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Walter Beard
1999 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Extended Cab Pickup
Added Apr 2018 • 40 Fuel-upsProperty of roguemale
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13.9 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SL 4.3L V6 GAS Manual 5 Speed
Added Jan 2022 • 85 Fuel-upsProperty of Bridewell1
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11.4 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SL 5.3L V8 GAS Automatic 4 Speed
Added Feb 2023 • 7 Fuel-upsProperty of MavJ
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14.3 Avg MPG
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Grey
1999 GMC Sierra 1500 SLE 4.8L V8 GAS Manual 5 Speed Standard Cab Pickup
Added Dec 2022 • 6 Fuel-upsProperty of Tommychu
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11.3 Avg MPG
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99 Shortbed
1999 GMC Sierra 1500 SLE 4.3L V6 GAS Automatic 4 Speed Standard Cab Pickup
Added Sep 2022 • 3 Fuel-upsProperty of IFIXEM2
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16.0 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
Added Aug 2022 • 3 Fuel-upsProperty of djlamm
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13.3 Avg MPG
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Plow Truck
1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed Standard Cab Pickup
Added Jul 2020 • 10 Fuel-upsProperty of drconnelly85
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12.8 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
Added Apr 2022 • 10 Fuel-upsProperty of aretz94
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15.0 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
Added Nov 2021 • 10 Fuel-upsProperty of joebro28
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14.8 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
Added Feb 2020 • 58 Fuel-upsProperty of ChadButtke
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13.3 Avg MPG
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Truck
1999 GMC Sierra 1500 SLE 5.3L V8 GAS Extended Cab Pickup
Added Jan 2020 • 35 Fuel-upsProperty of EY44
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15.9 Avg MPG
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My Sierra 1500
1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
Added May 2019 • 7 Fuel-upsProperty of 405g
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14.8 Avg MPG