The Smurfs (found animated National Benzole commercial series; 1978)
In 1978, National Benzole (A now defunct gas chain) promoted the company by selling smurfs merchandise in the UK. To promote The Smurfs, National Benzole created a series of animated commercials between 1978 and 1979 that featured smurfs checking cars with the instrumental version of Dutch singer Vader Abraham's "Smurf Song" (Het Smurfenlied) with the slogan "You Get Service With A Smurf" (The "Smurf Song" medley and the slogan would later be carried for BP commercials in Australia featuring The Smurfs along with Papa Smurf in the mid 1980's) which came out the previous year to promote the release of "The Smurfs And The Magic Flute" which later gained it's first English dub in 1979. These commercials were notable for having a very different animation style compared to the well-known Hannah Barbera series.
These commercials hadn't resurfaced on the Internet until 2013 when the official Youtube channel for BP uploaded one of the commercials.