No manufacturer I know of will warrant oil consumption unless it is more than 1 quart per 1000 miles. Believe it or not, all engines consume oil. Just not all at the same rate. Some passes the rings for consumption. The cylinder walls have to have a coating of oil to lubricate the piston and rings. Some of that gets burned. Some is vented with combustion blowby through crankcase ventilation.
An issue with direct injection engines is coking on the intake valves. Oil from crankcase ventilation hits the back side of hot intake valves then sticks. With port injection the intake mixture includes gasoline which has detergents and additives to address the issue. Today we have oils formulated to deal with it themselves. GM uses the trademark dexos to indicate such oils.
Ford has been putting both port- and direct- injection on the same engine. Says PI is better in some situations, DI better in others, and sometimes running both at the same time is best.
