Hefele playing for SpVgg Greuther Fürth in 2012
|Full name||Michael Martin Hefele|
|Date of birth||1 September 1990|
|Place of birth||Pfaffenhofen (Ilm), West Germany|
|Height||1.93 m (6 ft 4 in)|
|Playing position||Centre back|
|2012–2014||Greuther Fürth II||13||(0)|
|2014||→ Wacker Burghausen (loan)||15||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 19:17, 20 January 2019 (UTC)|
Hefele made his debut for SpVgg Unterhaching in 2010. He went on to play for SpVgg Greuther Fürth and was on loan at Wacker Burghausen. He played two seasons for Dynamo Dresden scoring 10 times in 72 appearances in all competitions and became the club captain.
In July 2016, Hefele joined English Championship side Huddersfield Town  Hefele scored his first goal for Huddersfield in a 1–1 draw with Aston Villa on 16 August 2016, just 26 seconds after coming off the bench, a Huddersfield record for the quickest time scored by a debutante in the club's 108-year history. On 28 January 2017, in a game against Rochdale, Hefele was substituted on as a striker in the 46th minute, coming on for Elias Kachunga. He then scored two goals as striker.
On 9 August 2018, Hefele joined English Championship side Nottingham Forest for an undisclosed fee. He made his debut for Forest on 14 August 2018 in the first round of the 2018–19 EFL Cup against Bury. The game finished 1–1 after 90 minutes with Forest going through to the second round 10–9 on penalties, one of which Hefele scored for Forest.
- As of the end of the 2017–18 season
|SpVgg Unterhaching||2010–11||3. Liga||27||0||0||0||—||—||27||0|
|SpVgg Greuther Fürth II||2012–13||Regionalliga Bayern||8||0||—||—||—||8||0|
|SpVgg Greuther Fürth||2012–13||Bundesliga||1||0||0||0||—||—||1||0|
|Wacker Burghausen (loan)||2013–14||3. Liga||15||0||0||0||—||—||15||0|
|Dynamo Dresden||2014–15||3. Liga||31||3||3||0||—||—||34||3|
- "Updated squads for 2017/18 Premier League confirmed". Premier League. 2 February 2018. Retrieved 11 February 2018.
- "Transfer-Hefele To Join HTAFC htafc.com".
- "Aston Villa 1–1 Huddersfield". BBC Sport. 16 August 2016. Retrieved 17 August 2016.
- "Nottingham Forest vs. Bury – 14 August 2018". Soccerway. Retrieved 16 July 2019.
- "M. Hefele". Soccerway. Perform Group. Retrieved 20 August 2017.
- Woodcock, Ian (29 May 2017). "Huddersfield Town 0–0 Reading". BBC Sport. Retrieved 26 May 2018.