* Senate fails to reach compromise on U.S. auto bailout
* OPEC should make severe output cut, says president
* Russia says ready to work with OPEC on output cuts
By Jennifer Tan
SINGAPORE, Dec 12 (Reuters) - Oil losses deepened to over $2 on Friday after a bailout plan for struggling U.S. auto makers stalled, raising prospects of a worsening economic slowdown in the world's largest oil consumer.
Senate negotiators failed late on Thursday to reach a compromise deal to bail out the U.S. auto industry and avert the threatened collapse of one or more car makers. [
]By 0450 GMT, crude for January delivery was down $2.60 at $45.38 a barrel, off a session low of $45.14.
London Brent crude was down $2.34 at $45.05.
"The failure of the auto bailout has broader implications for the already very weak U.S. economy -- these underlying concerns have not disappeared, and we expect oil prices to remain choppy over the next week," said David Moore, commodity strategist with Commonwealth Bank of Australia.
November U.S. producer price inflation and retail sales, as well as a preliminary reading on December consumer confidence, could add to the economic gloom, and further weaken the dollar which edged down towards a 13-year low against the yen.
Crude has shed two-thirds of its value over the last five months, down about $100 from a record peak of $147.27 scaled last summer as the global financial crisis crimps consumer demand for fuel.
"We've not placed the lows in oil yet -- the demand deterioration theme is still very much alive. I think we could go back to $40 levels as early as next week," said Jim Ritterbusch, president of Ritterbusch & Associates.
But it has still rebounded over 11 percent this week and is heading for its biggest weekly gain in four years, having jumped by 10 percent on Thursday after the OPEC president called for more "severe" supply cuts at next week's meeting.
Traders are closely watching OPEC for more signals on what some analysts say could be a further 1-2 million barrels per day (bpd) output cut at the group's Dec. 17 meeting.
Russia's President Dmitry Medvedev has also weighed in, saying the country was ready to work with OPEC on possible oil output cuts.
Japan's Nippon Oil said it expected OPEC to agree to cut 1.5-2.0 million bpd next week.
"Chances for a 2.5 mln bpd cut are possible, but that would put increased criticism on OPEC amidst the economic slowdown, so I think the likely cuts are up to 2 mln bpd," Kazuyoshi Takayama, Nippon Oil's general manager, told reporters on Friday.
Providing a positive note, the International Energy Agency on Thursday predicted that world oil demand growth would rebound in 2009 after shrinking this year for the first time since 1983.
The IEA's view that demand will grow in 2009 contrasts with that of the U.S. government's Energy Information Administration, which this week forecast consumption would fall by 450,000 barrels per day (bpd) next year. (Additional reporting by Osamu Tsukimori in Tokyo; Editing by Michael Urquhart) (jennifer.tan@thomsonreuters.com; +65-6417 4679; Reuters Messaging: jennifer.tan.reuters.com@reuters.net)