Yes VW cheated on diesel emissions, but this is far more significant. Suzuki is about to get back to being Suzuki.
Back in 2009 Volkswagen bought 19.9% of the Japanese company, VW would benefit from access to developing markets and small displacement engines and Suzuki would gain larger vehicle know how.
But that never happened. The relationship soured almost as fast as it started, with neither party agreeing on any of their proposed partnerships, a culture clash and both wondering what in God's name had they done.
By 2011 CEO Osamu Suzuki announced they wanted out in a strongly worded statement:
"Today Suzuki terminated the partnership with VW. Suzuki will be seeking the return of its shares from VW in arbitration. I am disappointed that we have to take this action but VW’s actions have left us no choice. They have continued to refuse our attempts on numerous occasions to resolve these issues through negotiation. I am more disappointed that having shaken the hand of Dr. Winterkorn in agreeing to this partnership, he has not honoured his commitment to grant Suzuki access to what was originally agreed.”
“In the absence of VW’s cooperation and given its failure to do what was agreed, there is no basis for the partnership to continue. With the cessation of the partnership there is also no basis for VW to hold on to Suzuki’s shares. We will now work to restore the relationship between Suzuki and VW to its original state as independent parties who do not restrict each other’s business. I call on Dr. Winterkorn to honour this.”
Restricting business would seem to be the key statement. Suzuki has been trying to get those shares back since 2011, scrounging cash and pinching pennies wherever possible. It's likely the reason behind Suzukis innitial withdrawl from WSBK and MotoGP, but more significantly also the likely source of Suzukis stagnant product line up.