Most still think that, but as the euro glides down from the peak of more than $1.50 it reached in November, trading on Tuesday at $1.37, some problems are emerging that complicate the picture.  Yes, the weaker euro is good for European exporters. It makes it easier for their cars, machinery and beer to compete on price abroad and makes every sale to the United States — and to countries like China whose currencies are closely tied to the dollar — more valuable in euros.  The weakening euro also is good news for Greece, Spain and Portugal, which are suffering from excessive trade deficits and struggling to become more competitive in world markets.  “I haven’t heard of anybody who is sad about it,” said Ralph Wiechers, the chief economist of the German Engineering Federation, an industry group in Frankfurt that represents makers of machine tools and other capital goods.  But there is also a range of negative effects. The cost of oil and other raw materials priced in dollars is rising. Consumer prices could come under pressure because goods imported from outside Europe become more expensive in euro terms.  More important, there is a queasy feeling that the decline of the euro makes an uncomfortable statement about Europe’s chronic tendency to underperform the United States in economic growth.  The euro’s decline reflects the harsh verdict of investors on the Greek debt crisis and the monetary union’s inability to insure that its members adhere to basic principles of fiscal prudence.  “It’s more of a euro weakness than a dollar strength,” said Ulf Schneider, chief executive of Fresenius, a German health care company. “The whole world is watching, and there is some doubt about the euro.”  The euro has bounced back from its recent low of about $1.35 in February, reflecting more optimism that Greece is taking decisive steps to reduce its 12.7 percent budget deficit. A short spike back to $1.40 or so is possible over the next few weeks as investors who bet against the euro unwind their positions, currency analysts at Commerzbank in Frankfurt said.  On Monday, the euro slipped against the dollar to $1.3672 in late trading in New York amid uncertainty about whether European economic ministers meeting in Brussels would figure out a way to help Greece while maintaining pressure on Greek leaders to reduce their deficit. Those concerns subsided somewhat on Tuesday after Standard & Poor’s announced that it was taking Greece off its negative credit watch, lowering the threat of a downgrade. The euro rebounded to $1.3756.  Over the next year or so, analysts say, the euro is likely to continue declining as United States growth accelerates more quickly than Europe’s. And the dollar may get an extra push from the Federal Reserve, which is expected to raise official interest rates faster than the European Central Bank will. Along with brisker United States growth, higher interest rates will make it more attractive for investors to own dollar assets.  “The Fed is expected to raise late this year, and then move more quickly,” said Antje Praefcke, a senior foreign exchange strategist at Commerzbank in Frankfurt, who predicts the euro will fall to $1.20 by the end of the year. “The E.C.B. isn’t expected to raise rates until next year and then move slowly.”  These days, though, what may matter most to businesses is not the absolute value of the euro but its stability. Above all, European business leaders hope the euro will avoid any sudden moves.  “Companies plan a year to 18 months ahead,” Ms. Praefcke said. “If there are very strong currency movements, companies don’t have time to react and hedge.”  The last two years have been a roller-coaster ride. After climbing fairly steadily for more than two years, the euro peaked near $1.60 in July 2008. But amid the financial crisis, the euro — and most other major currencies — suffered a series of violent swings. The euro plunged to $1.2453 in November 2008, then gyrated wildly several more times before reaching the recent peak of more than $1.50 in December.  “More important than the absolute level is the amount of volatility you see and how fast these swings are happening,” Mr. Schneider of Fresenius said. Last year, he said, the swings were “a little too fast for what a normal company is set up to adjust to.”  Big moves by the dollar, euro and yen also sent shock waves through less widely circulated currencies in eastern Europe or Asia. The volatility was expensive for exporters like Volkswagen, which suffered 1.2 billion euros (about $1.65 billion) in costs associated with exchange-rate fluctuations by the Russian ruble and other currencies in 2009, analysts at UniCredit said in a note.  “As these currencies are stabilizing, a significantly lower amount can be expected in 2010,” wrote Christian Aust, an analyst at UniCredit in Munich.  Heineken, the Dutch brewer, also suffered from the steep devaluations in emerging market currencies. A 23 percent plunge in the Polish zloty took 37 million euros from 2009 revenue, Heineken said in February. By contrast, a weaker dollar in comparison to 2008 cut revenue by a relatively small 17 million euros, according to the company, which is based in Amsterdam.  Companies have made strenuous efforts in the last decade to insulate themselves from currency shocks. It is routine even for smaller companies to hedge on financial markets, insuring themselves against future exchange rate movements. In addition, firms like Daimler, BMW or the software maker SAP have expanded operations in the United States to match production costs with sales.  For many companies, currency swings are fairly far down on the list of things that keep their managers up at night.  “We don’t see the currency situation as anything very dramatic,” said Stefan Ingildsen, vice president for finance and investor relations at the William Demant Holding Group, a Danish company whose products include Oticon hearing aids. Denmark is not a member of the euro zone, but the Danish krone closely tracks the euro.  Mr. Ingildsen’s relaxed attitude might seem surprising considering that the company gets 35 percent of its sales from the United States and makes most of its products in Europe. But the company buffers itself against dollar fluctuations by purchasing most of its components in China from suppliers that take payment in dollars, a form of so-called natural hedging.  As a result, the stronger dollar — which has also risen against the Danish krone — will add only 1 to 2 percent to operating profit in 2010, Mr. Ingildsen said.  Even rising energy prices are not unambiguously bad for European companies. Costly oil plays to Europe’s strengths in energy-saving technology, spurring demand for wind energy produced by Iberdrola Renovables of Spain or wind turbines made by Siemens or Vestas in Denmark.  Mr. Wiechers, the machinery industry economist, said, “It’s a chance to succeed on the market with innovative products.”
A weaker euro is beneficial for European exporters, but it sends a troubling message about the blocâs growth prospects.