I updated Lamborghini and Lotus as suggested by hpichris, and added some detail on VW/AUDI. Hope it helps.
Acura (see Honda): API, HTO-06
AM General: API
Audi (see VW):
Petrol: VW 502.xx/503.xx/504.xx, Diesel: VW 505.xx/506.xx/507.xx
1st generation engine oil: VW 502.xx/VW 505.xx (2.9 < HTHS < 3.4; cuurently rated as "high lubricity engine oil")
2nd generation engine oil: VW 503.xx/VW 506.xx (2007+ models; Interim - superceeded by VW 504.xx/VW 507.xx)
3rd generation engine oil: VW 504.xx/VW 507.xx (3.5 < HTHS < 3.59, Low SAPS; all 2008+ models particularly FSI engine; Currnetly rated as "LongLife Engine Oil"; compatible with VW 502.xx/505.xx)
Additional note: VW504.00/507.00 provides excellent protection against Wear, Piston deposits, Oxidative thickening, sludge; Fair protection against soot thickening; Low SAPS. Suitable for all models except Touareg R5 2.5 TDi and Touareg V10 5.0 TDi which require VW 506.01.
Bentley (see VW?): Bentley GT Continental 0W40 Mobil 1
BMW: API SM To prevent potential engine damage, use only BMW
High Performance Synthetic Oil part No 07 51 0 017 866 or
equivalent. Refer to engine compartment oil change decal. 1. M5, Z8 (S62 Engine) produced From 3/2000.BMW High
performance synthetic oil SAE 5W-30 part no. 07 51 0 017 866
or BMW high performance synthetic oil Castrol RS 10W-60 also
called Castrol TWS Motorsport SAE 10W-60 Synthetic oil part
no. 07 51 0 009 420 are recommended..
2. M5, Z8 (S62 Engine) produced From 3/2000.BMW High
performance synthetic oil SAE 5W-30 part no. 07 51 0 017 866
or BMW high performance synthetic oil Castrol RS 10W-60 also
called Castrol TWS Motorsport SAE 10W-60 Synthetic oil part
no. 07 51 0 009 420 are recommended..
Bugatti (see VW?):?
Chrysler: API
Ferrari: 355, 360, 430, 550, 575, SuperAmerica 5W40 Shell Helix Ultra, Enzo 10W60 Shell Helix Ultra Racing
Ford: API
General Motors: GM4718M
Honda: API
Hyundai: API
Infinity (see Nissan?): API
Isuzu: API
Jaguar (see Ford?):
Jeep (see Chrysler?): API
Lamborghini (see Audi/VW?):
Gallardo/Murcielago : 5W-40 for normal driving / 20W-50 for sport driving Agip
Diablo 6.0 : 5W-40 or 10W-40 Agip
Diablo 5.7 : 10W-50 Agip
(The types of oil stated here seem too specific. Anyone who has knowledge on these cars?)
Land Rover (see Ford?): API SL
Lexus (see Toyota?): API
Lincoln (see Ford?): API
Lotus: API
Maybach (see MB?): 0W40 Mobil 1
Mazda: API
Mercedes-Benz:
General Petrol (SA= Diesel (Low SAPS; SA= Additional note: MB229.5/229.51 provides excellent protection against Oxidative thickening, sludge, and soot thickening; Fair protection against Wear, piston deposits; HTHS >= 3.5 for all grade; Low SAPS for MB229.51
Mini (see BMW?): API 1. Synthetic based oil.
Mitsubishi: API
Nissan: API
Porsche: API 1. Synthetic oils are preferred/required.
Porsche Cayenne V6: VW 504.xx/507.xx
Rolls-Royce (see BMW?):?
Saab (see GM?): API 1. Synthetic GM-LL-A 025
Smart (Daimler AG):?
Suzuki: API
Subaru: API
Toyota: API
Volvo: API
VW:
Petrol: VW 502.xx/503.xx/504.xx, Diesel: VW 505.xx/506.xx/507.xx
1st generation engine oil: VW 502.xx/VW 505.xx (2.9 < HTHS < 3.4; cuurently rated as "high lubricity engine oil")
2nd generation engine oil: VW 503.xx/VW 506.xx (2007+ models; Interim - superceeded by VW 504.xx/VW 507.xx)
3rd generation engine oil: VW 504.xx/VW 507.xx (3.5 < HTHS < 3.59, Low SAPS; all 2008+ models particularly FSI engine; Currnetly rated as "LongLife Engine Oil"; compatible with VW 502.xx/505.xx)
Additional notes: VW504.00/507.00 provides excellent protection against Wear, Piston deposits, Oxidative thickening, sludge; Fair protection against soot thickening; Low SAPS. Suitable for all models except Touareg R5 2.5 TDi and Touareg V10 5.0 TDi which require VW 506.01.
Acura (see Honda): API, HTO-06
AM General: API
Audi (see VW):
Petrol: VW 502.xx/503.xx/504.xx, Diesel: VW 505.xx/506.xx/507.xx
1st generation engine oil: VW 502.xx/VW 505.xx (2.9 < HTHS < 3.4; cuurently rated as "high lubricity engine oil")
2nd generation engine oil: VW 503.xx/VW 506.xx (2007+ models; Interim - superceeded by VW 504.xx/VW 507.xx)
3rd generation engine oil: VW 504.xx/VW 507.xx (3.5 < HTHS < 3.59, Low SAPS; all 2008+ models particularly FSI engine; Currnetly rated as "LongLife Engine Oil"; compatible with VW 502.xx/505.xx)
Additional note: VW504.00/507.00 provides excellent protection against Wear, Piston deposits, Oxidative thickening, sludge; Fair protection against soot thickening; Low SAPS. Suitable for all models except Touareg R5 2.5 TDi and Touareg V10 5.0 TDi which require VW 506.01.
Bentley (see VW?): Bentley GT Continental 0W40 Mobil 1
BMW: API SM To prevent potential engine damage, use only BMW
High Performance Synthetic Oil part No 07 51 0 017 866 or
equivalent. Refer to engine compartment oil change decal. 1. M5, Z8 (S62 Engine) produced From 3/2000.BMW High
performance synthetic oil SAE 5W-30 part no. 07 51 0 017 866
or BMW high performance synthetic oil Castrol RS 10W-60 also
called Castrol TWS Motorsport SAE 10W-60 Synthetic oil part
no. 07 51 0 009 420 are recommended..
2. M5, Z8 (S62 Engine) produced From 3/2000.BMW High
performance synthetic oil SAE 5W-30 part no. 07 51 0 017 866
or BMW high performance synthetic oil Castrol RS 10W-60 also
called Castrol TWS Motorsport SAE 10W-60 Synthetic oil part
no. 07 51 0 009 420 are recommended..
Bugatti (see VW?):?
Chrysler: API
Ferrari: 355, 360, 430, 550, 575, SuperAmerica 5W40 Shell Helix Ultra, Enzo 10W60 Shell Helix Ultra Racing
Ford: API
General Motors: GM4718M
Honda: API
Hyundai: API
Infinity (see Nissan?): API
Isuzu: API
Jaguar (see Ford?):
Jeep (see Chrysler?): API
Lamborghini (see Audi/VW?):
Gallardo/Murcielago : 5W-40 for normal driving / 20W-50 for sport driving Agip
Diablo 6.0 : 5W-40 or 10W-40 Agip
Diablo 5.7 : 10W-50 Agip
(The types of oil stated here seem too specific. Anyone who has knowledge on these cars?)
Land Rover (see Ford?): API SL
Lexus (see Toyota?): API
Lincoln (see Ford?): API
Lotus: API
Maybach (see MB?): 0W40 Mobil 1
Mazda: API
Mercedes-Benz:
General Petrol (SA= Diesel (Low SAPS; SA= Additional note: MB229.5/229.51 provides excellent protection against Oxidative thickening, sludge, and soot thickening; Fair protection against Wear, piston deposits; HTHS >= 3.5 for all grade; Low SAPS for MB229.51
Mini (see BMW?): API 1. Synthetic based oil.
Mitsubishi: API
Nissan: API
Porsche: API 1. Synthetic oils are preferred/required.
Porsche Cayenne V6: VW 504.xx/507.xx
Rolls-Royce (see BMW?):?
Saab (see GM?): API 1. Synthetic GM-LL-A 025
Smart (Daimler AG):?
Suzuki: API
Subaru: API
Toyota: API
Volvo: API
VW:
Petrol: VW 502.xx/503.xx/504.xx, Diesel: VW 505.xx/506.xx/507.xx
1st generation engine oil: VW 502.xx/VW 505.xx (2.9 < HTHS < 3.4; cuurently rated as "high lubricity engine oil")
2nd generation engine oil: VW 503.xx/VW 506.xx (2007+ models; Interim - superceeded by VW 504.xx/VW 507.xx)
3rd generation engine oil: VW 504.xx/VW 507.xx (3.5 < HTHS < 3.59, Low SAPS; all 2008+ models particularly FSI engine; Currnetly rated as "LongLife Engine Oil"; compatible with VW 502.xx/505.xx)
Additional notes: VW504.00/507.00 provides excellent protection against Wear, Piston deposits, Oxidative thickening, sludge; Fair protection against soot thickening; Low SAPS. Suitable for all models except Touareg R5 2.5 TDi and Touareg V10 5.0 TDi which require VW 506.01.