Audi has a wide selection of engines, with some engines only being offered on certain models. For the A3, you may choose between a 30 TFSI, 30 TDI, 35 TFSI, 35 TDI, 40 TFSI, and 40 TDI. What do all the numbers represent, even though the TFSI abbreviation stands for a gasoline engine and the TDI stands for a diesel engine?
The Audi changed its previous numerical badging system, which used the difficult coding format and comprised of the letters “2.0” to denote an engine with a 2.0-liter displacement, with a new system in the fall of 2017.
This system just considers the power output and ignores the engine size. Simply said, the engine’s power decreases as the number decreases. So even if a 35 TFSI is a 1.5-liter gasoline engine and a 35 TDI is a 2.0-liter diesel engine, both of them generate about the same amount of power. Are you following?
All of this might seem a little pointless, but it makes sense why the German firm decided to adopt this new branding scheme. It all comes down to the reality that an engine’s size no longer directly affects how much power it can generate. A conventional 1.4-litre engine cannot match the power of a compact, turbocharged 1.0-litre engine.
In This Article...
What is an Audi 40 TDI?
A new 40 TDI four-cylinder diesel engine from Audi has been added to the A6 Saloon, A6 Avant, and A7 Sportback models. In the UK, an engine with fewer than six cylinders has never before been found under the hood of an A7.
The headline results in an A6 Saloon with 18-inch alloy wheels are a claimed 62.8 mpg and 117 g/km, which is over 10 mpg more than the closest-matched BMW 520d. Both the A6 Avant and the A7 get 60.1 mpg, but the A6 Avant produces 124 g of CO2 per mile and the A7 122 g.
What does a TFSI of 40 mean?
Make sure you receive the engine you desire by understanding what the labels on your Audi imply. Naturally, the majority of auto dealers will prominently designate vehicles with their fuel type, but understanding the manufacturer’s own shorthand might be useful nonetheless.
What does TFSI stand for?
Every gasoline-powered Audi vehicle has the TFSI badge, whereas TDI is the emblem for diesel vehicles. The acronym TFSI, which stands for “Turbocharged Fuel Stratified Injection,” designates a turbocharged gasoline engine. Audi used to sell ‘FSI’ engines, which lacked turbochargers, for about 15 to 20 years.
Since the fall of 2017, Audi cars frequently have a number before the TFSI or TDI logo. The power of the car is indicated by these two numerals, which range from 25 to 70. Audi claims that the number is there to make it simpler to compare gasoline or diesel, hybrid, and electric vehicles. It has nothing to do with the size of the engine or the amount of horsepower you get. When ordering a new Audi, you can choose to have the badge removed if you’d like.
TFSI vs TSI
The only brand in the Volkswagen Group to utilize ‘TFSI’ emblems is Audi; the majority of the other brands use ‘TSI’. As engines are frequently transferred between brands without any alterations, there tends to be no distinction between the two in more recent vehicles.
TFSI was utilized on belt-driven engines and TSI on chain-driven engines in some earlier cars, but it doesn’t seem like that’s the case now.
Audi TFSI e engines
An Audi TFSI e engine isn’t just a regular petrol engine despite the small “e” that is added. You’ll notice it if you’re gazing at the Audi Q5 TFSI e or another of the brand’s numerous plug-in hybrid (PHEV) vehicles because it denotes that the vehicle is a PHEV.
In this case, a battery, one or more electric motors, and a gasoline engine are combined. Typically, a fully charged battery will provide at least 30 miles of electric range, improving fuel economy and lowering operating expenses.
Audi TFSI engine problems
The Audi TFSI engine has generally proven to be dependable, but like with all engines, proper and appropriate maintenance is the secret to longevity. Higher-than-average oil consumption in pre-2012 TFSI engines could be unimportant or, in rare situations, a hint that the engine’s piston rings are perhaps worn. Although recirculation valves and injectors appear to be components to watch out for, TFSI and TSI engines are generally known for their dependability.
What does Audi 45 TDI mean?
The future Audi envisions is productive, inventive, and revolutionary. the Power Identification system from Audi. a system of badges that uses a two-digit identification to communicate in a single language the power output of combustion, hybrid, and electric engines.
The power output of each model, measured in kilowatts, serves as the standard for the model designations (kW). As a result, Audi has divided its model lineup into various performance levels, each of which is denoted by a pair of numbers. Audi has chosen to identify the power of each model using a range or band of kWs. kWs are also compatible with current electric engine technology and can therefore be used with any upcoming hybrid and electric drive versions.
The table below demonstrates how Audi’s Power Identification is made up of various kW power output bands:
For instance, all models with a power output between 81 and 109 kW will have the number combination “30 on the rear. And “45” denotes a power output range of 169 to 209 kW. The performance class exceeding 400 kW, denoted by the number combination “70, is at the top of the Audi model range. In each instance, the engine technologyTFSI, TDI, g-tron, or e-tronis listed beside the numbers.
Engine displacement as a performance parameter is losing significance to our clients as alternative drive technologies become more prevalent. It is possible to discern between the various performance levels for our cars because to the simplicity and logic of the designations’ power output-based organizational scheme.
At Audi, innovation means embracing change before anyone else. Progress is change that has been done properly.
All new Audi cars beginning in the fourth quarter of 2018 will use the name (excluding S, RS and R8 models).
Please spend a moment getting acquainted with the power output range of your present or upcoming Audi.
What distinguishes a 35 TFSI from a 40 TFSI?
With the introduction of mid-series 40 TFSI and 40 TFSI S-line versions, which start at $53,900 and $59,400 plus on-road expenses, respectively, AUDI Australia has strengthened its essential Q3 premium small SUV lineup.
The 40 TFSI is positioned above the base 35 TFSI, which has an on-road price of $46,400 plus. It offers a number of extra incentives, such as a larger engine, Audi’s quattro all-wheel-drive system, and a number of other standard features.
The 2.0-liter four-cylinder turbocharged petrol engine in the 40 has more power and torque than the front-drive 35 TFSI’s 110kW/250Nm 1.4-liter turbo-petrol engine, giving it a stronger presence.
The Q3 40 TFSI can accelerate to 100 km/h from a complete stop in 7.8 seconds thanks to a seven-speed automatic transmission that distributes power to all four wheels.
Additionally, it can achieve a combined cycle fuel efficiency of 8.3 liters per 100 km and release 188 grams of CO2 per kilometer.
Due to its distinctive 19-inch alloy wheels and fully body-colored paint finish, the 40 TFSI can be identified from the 35 TFSI.
With its 20-inch Audi Sport alloy wheels, rear window privacy glass, and S-line exterior package, the more costly 40 TFSI S-line goes a step further.
Leather upholstery, dual-zone climate control, ambient lighting, cloth headlining, a 10.1-inch touchscreen MMI navigation and infotainment system, DAB+ digital radio, a six-speaker audio system, a 10.25-inch digital instrument cluster, four USB ports, and Qi wireless phone charging are all included in the high standard cabin specification of the 35 TFSI and 40, respectively.
Along with keyless entry/start, wireless Apple CarPlay, an electronic tailgate with gesture control, an auto-dimming rearview mirror, a multifunction leather-covered steering wheel with shift paddles, and Audi drive select, the new mid-range model also includes these features.
The additional $5500 for the S-line adds exterior improvements as well as S-embossed leather sports seats, stainless-steel sports pedals, brushed aluminum inlays, a larger Virtual Cockpit display (12.3 inches), contrast stitched floor mats, illuminated door sills, a leather-wrapped flat-bottom steering wheel, and a premium 10-speaker audio system.
Autonomous emergency braking with bicycle and pedestrian recognition, lane-departure warning, lane-change warning, rear cross-traffic assist, tyre pressure monitoring, hill-descent control, all-around parking sensors, and a reversing camera are among the safety features on the 40 TFSI.
A 360-degree camera, high-beam assist, park assist, auto-dimming exterior mirrors, and adaptive cruise aid are all included with the S-line model.
With a starting price of $89,900 plus on-roads, the high-performance RS Q3 sits at the top of the Q3 lineup and is more than $30,000 more expensive than the 40 TFSI S-line. It has a 2.5-liter, five-cylinder, 294kW/480Nm engine.
Audi sold 997 units of the Q3 in the first four months of 2020, trailing the category leader, the BMW X1, by just nine units (1006).
What makes 40 TFSI and 45 TFSI different from one another?
The new, less expensive 40 TFSI model has 184 horsepower, but the price of the 228-hp 45 TFSI model increases by $1400. For the 2021 Q3 lineup, Audi is introducing a new base model. The 40 TFSI has a 2.0-liter inline-four turbocharged engine that is less potent than the 45 TFSI’s current engine.
Ten Second Review
For consumers in the full-sized Executive segment who are currently considering saloon or estate versions of automobiles like BMW’s 5 Series, Mercedes’ E-Class, or Jaguar’s XF, Audi’s “C8”-series A6 provides a beautifully conceived and flawlessly performed alternative. Ingolstadt now claims a new degree of dynamic parity in other areas, but the usage of front wheel drive at the bottom of the range on a variety like the four cylinder “40 TDI” diesel vehicle we’re evaluating today still distinguishes this contender from competitors like these.
Background
Although the Audi A6 has long been the best-selling full-sized Executive car in the world, Britain hasn’t generally preferred it. There have been eight distinct models in this class supplied by Audi over the years, and with the ‘C8’ series design, the fifth of which will be branded the ‘A6,’ there are now less reasons than ever not to choose one. This sleeker, more upscale vehicle is more technologically advanced than its predecessor, whether you choose the saloon body type or the alternative Avant estate body style.
In other words, the Ingolstadt brand has done this by democratizing much of the technology of its larger luxury segment A8 and making it more accessible to Executive sector buyers. Audi describes it as “a first class excursion with a business class ticket.” This is an effort to steal customers from class leaders like the BMW 5 Series, Mercedes E-Class, and Jaguar XF. Here, we’ll evaluate the car in its base ’40 TDI’ 2.0-liter diesel configuration.
Driving Experience
Despite the fact that entry-level four-cylinder variants like this 40 TDI continue to defy the class trend by sending power to the front wheels, this A6 offers a decent step forward in terms of dynamic driving experience compared to previous iterations. That poses a constraint in terms of dynamics, but Audi’s engineers have found a way to get past it with the “C8”-series model by including a firmer MLB-Evo chassis, a more responsive variable “Progressive” steering rack, and a highly effective optional adaptive damping system. However, the changes that have arguably been done here are those that have occurred under the hood.
The “40 TDI” 2.0-liter diesel engine that we tested uses Audi’s most recent MHEV mild hybrid technology. It is quieter than the corresponding engine in the previous generation model and produces 14 more horsepower (204 PS) and 400 Nm of torque. Customers can choose between front-wheel drive and quattro 4WD, and in either case, the drivetrain is paired with the manufacturer’s 7-speed dual-clutch “S tronic” automatic transmission. This front-driven saloon A6 model takes 8.1 seconds to accelerate to 62 mph from rest, which is more than half a second slower than the time rivals like the BMW 520d or the Mercedes E220d would need to do. This is because the transmission hasn’t been specifically designed for traffic light Grand Prix-style starts. However, once you’re moving, the engine truly finds its groove, actually outpacing those two rivals in the more crucial 30-70 mph overtaking increment. There is also a pointlessly faster top speed of 152 mph.
Design and Build
Audi’s research clinics indicate that A6 customers place a high emphasis on subdued exterior design. As a result, they should be at ease with the eighth generation ‘C8’ contender’s conservatively updated appearance. This piece of sculpted Executive segment German real estate is currently rather sizable, measuring almost five meters long, nearly two meters broad, and slightly over 1.4 meters tall. Traditionally stylish? Maybe not, but it is undeniably dapper and elegant, with shape that the brand claims alludes to its “quattro genes.” Although it is 10mm taller, the Avant variant is exactly the same length as the saloon.
You’ll need to enjoy using displays when operating a vehicle because this entirely revamped interior can include three of them, basically replacing all the numerous buttons and knobs of the preceding A6. As soon as the door is opened, the two that you’ll initially notice dominate the upper and lower portions of the piano-black-trimmed center stack. The most crucial radio, media, and phone functionalities are handled by the softly curved upper display, while the lower 8.6-inch monitor is set aside for additional comfort-oriented capabilities, primarily climate-related ones. The 12.3-inch “Audi Virtual Cockpit” instrument binnacle screen, which you can optionally watch through the three-spoke wheel, communicates with both monitors. A passenger who is 6 feet 3 inches tall can comfortably sit behind a driver who is the same size in the back because of the additional 21mm of internal length. According to Audi, headroom has grown by 10mm and legroom by 17mm in the rear this time. The saloon’s boot has 530 liters of space, while the Avant’s boot has 565 liters.
Market and Model
The two TDI diesel engines that were available from the A6’s debut are the primary emphasis of the lineup. The front-driven “40 TDI” 2.0-liter four-cylinder version with 204PS, which has a standard 7-speed “S tronic” dual-clutch auto transmission, is the most popular choice. Quattro 4WD is not standard at this price point. As is customary with the A6, customers can choose between a saloon body style and the Avant estate body type for an additional $2,100. There are also two important trim levels: the standard “Sport” and the more sporty “S line” spec we tried for a 3,360 premium.
The typical “Sport” model ought to provide the majority of the gear you actually want. 18-inch alloy wheels, auto-dipping LED headlamps, an acoustically-glazed windscreen, the “Parking System Plus” all-around parking sensor system, a rear view camera, LED tail lamps, power-folding mirrors, and an alarm are all included. Additionally, there is a “Progressive Steering” setup that continuously modifies the steering’s gearing based on user inputs. One of the things you can modify through the settings of the standard Audi “drive choose” system is steering. This system also lets you change throttle response and gearshift timings to suit your driving preferences. Inside, there is leather upholstery in the brand’s “Twin” style, heated front seats with electronic adjustment, and 4-way powered lumbar support. The Avant version also includes a power-operated tailgate, roof rails, and a rear spoiler.
Cost of Ownership
All of Audi’s popular A6 engines are outfitted with “MHEV” technology, or mild hybrid electric vehicle, which is based on a belt alternator starter and lithium-ion battery. The electrical system for this four-cylinder “40 TDI” variation is a 12V version. The engine can automatically shut off for up to 40 seconds when coasting at between 34 and 99 mph on the highway in order to save gasoline; Audi refers to this as “Intelligent Coasting.” The Mild Hybrid configuration maximizes brake energy regeneration at lower speeds, resulting in an improved energy recovery output of up to 12 kW. Finally, the MHEV package offers an extended stop/start capability that can operate at up to 13 mph in traffic, allowing the vehicle to smoothly come to a stop.
Let’s look at the fuel and CO2 data, which we will provide based on the saloon body design and the smallest 18-inch size of wheel. Larger rims, like the 19-inchers on this ‘S line’ variation, will obviously have a negligible effect on your returns. The additional 65kg weight of the Avant estate body style reduces efficiency by about 5%. The combined cycle fuel economy and CO2 emissions of the “40 TDI” are 62.8 mpg and 117 g/km, respectively, for a benefit-in-kind taxation rate of 28%. That is roughly the same as what you would receive from a competing BMW 520d and slightly better than what you would receive from a competing Mercedes E220d.
Summary
In conclusion? Well, this “C8”-series A6 fulfills the mandate, especially in its 40 TDI configuration, and gives full legitimacy to a model line that had previously become a fairly overlooked option in its industry. Yes, you still need to genuinely appreciate Audis to enjoy it, but if you do, you’ll find it much simpler to connect with this one.
In comparison to a Jaguar with wood panels, a BMW that is boldly sumptuous, or a Mercedes that is status-conscious, some people may still find this A6 to be a touch isolated. Others, however, will likely find it to be just another aspect of this car’s vorsprung durch tecknik allure, given that it is packed with smart features made to save you time and make your life easier. Is that really all that matters? You might believe that towards the conclusion of the kind of really long day that the A6 was intended for.