Under her maiden name, Lotta Pedersen, she made her debut in the Sveriges Television program "Nygammalt" in 1980 when she was 17. She was also a member of the Trioala, an a cappella choir. Later, she received a permanent place in the TV program's choir.

She represented Sweden in Eurovision Song Contest 1987 after winning the Melodifestivalen of that year with "Fyra bugg & en Coca Cola". The song was renamed "Boogaloo" for the Eurovision competition.

(This section is about the dansband and covers the period 1989 to 1994) Lotta & Anders Engbergs orkester was a dansband in Skara, Sweden which was active during the years 1989-1994, with Lotta Engberg as singer. She formed the band in 1989 with her former husband Anders Engberg, who already had a band in his own name. In 1993, the band was awarded a Grammis in 1993 for their album Kärlek gör mig tokig. It peaked at #33 at the Swedish album chart.

Lotta Engberg left the band around New Year 1993-1994, and started an own dansband, Lotta Engbergs orkester, following the couple's divorce. The remaining part of the band formed Anders Engbergs.

Born in Överkalix, she was raised in Laxå, Örebro County. She was married to Anders Engberg, but they divorced in 1994. She now lives in Alingsås with her new husband.

She was also a singer in a number of formations including "Trioala" early on, and in dansbands Lotta & Anders Engbergs orkester from 1989 to 1994, and after her divorce from Anders Engberg, in dansband Lotta Engbergs from 1994 until 2002. She continues now as a solo Artist. On 2 October 1999 Sweden issued a postage stamp with her portrait. She also has a great number of collaborations including joint albums with Jarl Carlsson in 1987, Christer Sjögren and Willie Nelson, both in 2012.

Kikki, Bettan & Lotta was a Swedish-Norwegian super trio, active 2001-2004 and consisting Kikki Danielsson, Elisabeth "Bettan" Andreassen and Lotta Engberg.

In 2014, Lotta Engberg competed as a Celebrity Dancer in Let's Dance.