Just googled Audi 252 'OTTO cycle'
From this Audi page it sounds like they are actually one of the same engines:
https://www.audi-mediacenter.com/en...he-new-audi-a4-and-a4-avant-4328/engines-4336
"
High-tech power pack: the 2.0 TFSI
The 2.0 TFSI* with a displacement of 1,984 ccis available in two versions for the Audi A4 and A4 Avant. Its technical refinements are the exhaust manifold integrated into the cylinder head, the rotary-valve model for thermal management, the Audi valve-lift system (AVS) for the outlet valves, the electric wastegate of the turbocharger and the dual fuel injection. In partial load, indirect injection in the inlet manifold supplements the FSI direct injection.
In the high-end version, the 2.0 TFSI delivers 185 kW
(252 hp)* and torque of 370 Nm
(272.9 lb-ft) between 1,600 and 4,500 rpm. This allows sporty driving: The new A4 Sedan with quattro drive and seven-speed S tronic sprint from 0 to 100 km/h
(0 to 62.1 mph) in 5.8 seconds and has an electronically limited top speed of 250 km/h
(155.3 mph). The new A4 Avant has corresponding figures of 6.0 seconds and 250 km/h. The Sedan with front-wheel drive and S tronic consumes just 5.7 liters of fuel per 100 kilometers in the NEDC
(41.3 US mpg) and emits 129 grams of CO2 per kilometer
(207.6 grams per mile).
The second version of the 2.0 TFSI, the gasoline ultra model, delivers 140 kW
(190 hp)* and torque of 320 Nm
(236 lb-ft)between 1,450 and 4,200 rpm. This also results in very agile performance: 7.3 seconds from 0 to 100 km/h
(62.1 mph) and a top speed of 210 km/h
(130.5 mph) for the Sedan; 7.5 seconds and 210 km/h
(130.5 mph) for the Avant (both with S tronic). NEDC fuel consumption is excellent: The Sedan consumes 4.8 liters per 100 kilometers
(49 US mpg) and the Avant 5.0 liters
(47 US mpg), equivalent to 109 and 114 grams of CO2 per kilometer
(175.4 and 183.5 grams per mile) respectively."
Maybe more will become clearer when people start to get these models on the rolling road and tune them.
