Après avoir vu les photos espion de la prochaine génération d'Audi A3, nous attendons patiemment que le camouflage se détache. Toutefois, cela pourrait ne pas se produire dans un avenir proche, compte tenu du fait qu'Audi vient de rafraîchir son A3 Sportback G-tron.
Bien que le groupe Volkswagen ait clairement indiqué par ses investissements massifs que l'avenir est à l'électrification, il croit toujours aux moteurs à essence et au gaz naturel. À titre d'exemple, nous pouvons citer la Škoda Octavia G-TEC, la SEAT Arona TGI, la VW Polo TGI et la VW Golf TGI. Ces voitures ont toutes été mises à jour ces derniers mois, et c'est au tour de l'Audi A3 Sportback de recevoir une petite amélioration.
Galerie: Audi A3 Sportback G-tron
Fini l'ancien moteur 1,4 litre TFSI de 109 ch, il est remplacé par un nouveau moteur 1,5 litre TFSI de 129 ch. Tout comme le modèle précédent, la version 2019 est équipée de deux réservoirs à gaz en fibre de verre et installés sous le plancher du coffre. Cependant, pour cette A3 Sportback G-tron mise à jour, Audi installe un troisième réservoir − cette fois en acier − d'une capacité de quatre kilogrammes (sept kilogrammes pour les deux précédents). Pour cela, Audi a tout simple réduit la taille du réservoir d'essence, qui ne peut maintenant contenir seulement neuf litres de carburant. En ajoutant un troisième réservoir, Audi dit qu'il a étendu l'autonomie de sa voiture à 400 km lorsqu'elle fonctionne uniquement au gaz naturel. La précédente version affichait le même niveau d'autonomie, mais elle était homologuée suivant le cycle NEDC, qui est moins réaliste que le WLTP rappelons-le. Audi prend déjà les commandes pour cette A3 Sportback G-tron en Allemagne. De l'autre côté du Rhin, les prix démarrent à partir de 30'600 euros.
Le GNC chez Audi :
Source : Audi
Audi A3 Sportback g-tron:
Starting the New Model Year with a Longer CNG Range
- Audi A3 Sportback g-tronavailable to order beginning on March 7
- Noticeable power boost thanks to new engine with 131 metric hp
- Tank concept enables pure CNG range (WLTP) of around 400 kilometers (248.5 miles)
The Audi A3 Sportback g-tron* is starting the new model year with a technology update. Thanks to its increased tank volume, the compact model can cover around 400 kilometers (248.5 miles) (WLTP cycle) in gas operation. Presales at dealerships in Germany will kick off on March 7. The basic price will be EUR 30,600.
The Audi A3 Sportback g-tron forms part of an integrated and sustainable mobility concept from the brand with the four rings. Equipped with a new 1.5 TFSI engine producing 96 kW (131 metric hp), the A3 Sportback g-tron sets standards for efficiency and economy. To enable the four-cylinder engine to run on these fuels, Audi engineers modified its cylinder head, turbocharging, fuel injection system and catalytic converter. Compared to gasoline, combustion of natural gas emits 25 percent less CO2 due to the lowest carbon content of all hydrocarbons. In addition, particulate emissions remain very low.
Long range thanks to third gas tank
Just as before, there are two tanks made of glass fiber-reinforced polymer (GFRP/CFRP) beneath the luggage compartment floor of the five-door car, each of which hold roughly seven kilograms (15.4 lb) of gas. They reduce luggage space only marginally and are constructed from a composite material, making them very lightweight. In the new Audi A3 Sportback g-tron, an additional steel cylinder filled with four kilograms (8.8 lb) of CNG extends the range during gas operation. Reducing the size of the gasoline tank not only frees up the necessary space for this additional gas tank, it also makes the new Audi A3 Sportback g-tron a quasi-monovalent vehicle. Using the specific benefits and dimensions of each of the two tank technologies to its advantage, the intelligent combination of GFRP tanks and the gas tank makes optimum use of the existing installation space. The gasoline tank, which now holds nine liters (2.4 US gal), provides the conventional mobility reserve.
Strict safety requirements
The two plastic tanks storing the gas with an operating pressure of up to 200 bar follow the Audi lightweight design philosophy. Thanks to their layout, they weigh 66 percent less than comparable steel cylinders. Their inner layer is a gas-tight polyamide bladder.
The load-bearing fiber-reinforced laminate consists of an inner layer of carbon fiber-reinforced polymer (CFRP) and a layer of glass fiber-reinforced polymer (GFRP) on top. This combination ensures ultra-high strength. Using GFRP not only improves stability, the composite material is also a reliable visual indicator of damage. Following an application of force from the outside, for example in the event of an accident, the color of the layer changes to a milky-white. Before being installed in a car, each tank is subjected to a hydraulic test at 300 bar during production. The average burst pressure of 580 bar is far higher than this and exceeds the legal requirements of 470 bar by far.
Convenient operation
The filler necks for gas and gasoline are located under a shared tank flap. Two indicators inform the driver about the fill levels of the tanks. The driver information system shows the fuel consumption in the active operating mode.
The Audi A3 Sportback g-tron arrives at the customer equipped with a seven-speed S tronic. In Germany, the Audi A3 Sportback g-tron costs EUR 30,600 and is available to order beginning March 7.
Fuel consumption of the models listed
(Fuel consumption and CO2 emission figures given in ranges depend on the equipment selected)
Audi A3 Sportback g-tron:
CNG consumption in kg/100 km: 3.5;
Combined CO2 emissions in g/km (CNG): 96–95