If the euro is going to survive without a Depression, German consumers are going to have to behave in ways that are, well, distinctly un-German.

While attention is focused on the suffering that the euro zone debt debacle is inflicting on the weak and the political anger the costs of bailouts are engendering among the strong, it is important to understand that the belt-tightening won’t just be a Gaelic and Mediterranean phenomenon.

German consumers will (rightly) regard events as likely to increase their taxes while doing precious little for their incomes and job prospects. If they react to this like Americans and spend like there is no tomorrow, well then, perhaps the euro zone can handle the local recessions in the Austerity Provinces. If, on the other hand, Germans behave anything like the way they have in the past, they will save more and only increase spending marginally, if at all.

“Over the four quarters to 2011 Q4 it is hard to see (German consumer spending) growth exceeding 1 percent, and easy to see it falling short, especially if budgetary rigour, rising food and energy prices, and the need for further Club Med subsidy provoke the normal reaction from German consumers,” Charles Dumas of Lombard Street Research in London wrote in a note to clients.

Against the wider backdrop this is not encouraging; U.S. demand will be weak, China is trying to stomp on inflation and the euro zone periphery will very likely be contracting. That really does leave German consumers as the engine of euro zone growth — a role that is, for them, unusual.