"Wastin' Gas" is a song recorded by Canadian country rock artist Dallas Smith for his second studio album, Lifted (2014). It was released October 28, 2014 through 604 Records (in Canada) and Big Mountain Records (in the US) as the lead single from the album, and fourth overall after the three released in support of Tippin' Point (2014). The song entered the Canadian Hot 100 at number 41 in November 2014, Smith's second highest peak. On the chart issued January 22, 2015, "Wastin' Gas" rose to No. 1 on the Canada Country airplay chart, becoming Smith's first chart topper.

Markos Papadatos of Digital Journal rated the song 4.5/5 stars and praised the song's "energy" and Smith's "charisma", writing "'Wastin' Gas' is one of those songs that one wants to listen to while rolling their windows down and cruising on the highway [...] His vocals are refreshing and the song has clever and fun lyrics." Mike Bell of The Calgary Herald was more critical of the song in his review of Lifted, describing it as "yet another entry in the drivin' with my best girl genre" and noting that it is "fairly catchy, relatively inoffensive, [and] remarkably familiar, but with zero risks taken." In a complimentary review of Lifted, Shenieka Russell-Metcalf of Canadian country music blog Top Country praised "Wastin' Gas" as a "fun and catchy song that is sure to make you want to turn it up loud." Robert K. Oermann of MusicRow magazine gave the song a glowing review. "The churning production is terrifically exciting," writes Oermann, "Luckily, [Smith's] got the vocal chops to keep up with it, and the driving song has hooks aplenty."

In Canada, "Wastin' Gas" debuted and peaked at number forty-one on the Billboard Canadian Hot 100 on the chart issued November 15, 2014. It instantly became Smith's second highest-peaking single on that chart, behind only "Tippin' Point", which reached number thirty-six. On the Canada Country airplay chart, the song debuted at number forty-three on the chart issued November 15, 2014 before vaulting to number twenty-three in its second week. It reached the top 10 on the chart issued December 13, 2014 — becoming his ninth consecutive top 10 hit — and has since topped the chart.

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