The Mercedes-Benz GLE-Class, formerly Mercedes-Benz M-Class, is an mid-size luxury Crossover SUV produced by the German automaker Mercedes-Benz since 1997. In terms of size, it is slotted in between the smaller GLC-Class and the larger GLS-Class, with which it shares platforms. Since April 2015, the M-Class has been renamed to GLE-Class. Although grouped under the "M-Class" naming banner since the first launch, BMW, who sells M models such as the M3, objected to the car being badged "M" with the three-digit engine level afterwards. This forced Mercedes-Benz to defer to a double-tiered marketing strategy of "ML" badging under an M-Class umbrella. There has been some confusion surrounding this nomenclature, with many sources erroneously referring to the series as the "ML-Class", including Mercedes-Benz itself. From 2015, with the release of the facelifted W166 third generation model at the New York Auto Show in April, the M-Class was renamed to GLE-Class as per the revised nomenclature adopted by the brand. Under this scheme, SUVs use the base name "GL", followed by the model's placement in Mercedes-Benz hierarchy. The "G" is for Gelandewagen (German off land wagon for off-road vehicle) and alludes the long-running G-Wagen. This is followed by the letter "L" that acts as a linkage with the letter "E", the GLE being the SUV equivalent to the E-Class. The fourth generation GLE-Class was unveiled at the 2018 Paris Motor Show. At launch, the GLE will be sold with two engine options. The GLE 350 will have a 2-liter 4-cylinder engine with 255 hp (190 kW) and the GLE 450 with a 3-liter, inline-6, turbocharged engine with 362 hp (270 kW) and 369 lb ft (500 Nm) torque. The GLE 450 will have a 48V electric system with an integrated starter motor. The system powers the air-conditioner, in-car electronics and the electronically driven turbocharger. For the first time, the GLE also adds a seven-seat option. The AMG GLE 53 was introduced at the 2019 Geneva Motor Show in March. It has a 3.0 L turbo I6 boosted to 429 hp (320 kW) and 384 lb ft (521 Nm) torque. A 48V electric system like in the GLE 450 features EQ Boost for an extra 21 hp (16 kW) and 184 lb ft (249 Nm) torque on demand.