An old adage in the automotive world, attributed to Carroll Shelby, states that 'horsepower sells cars, but torque wins races.' Although this statement sounds poetic, it oversimplifies reality. While power impresses in technical specifications, a powerful sports car can seem weak at low RPMs if it lacks adequate torque in that range. In competitions, success does not depend solely on top speed on the final straight, but rather on the ability to accelerate after corners and regain speed.
Shelby experienced this dynamic in the early 1960s. While Ferraris used smaller displacement V12 engines with high revs to achieve impressive figures on paper, Shelby adapted the AC Cobra and the Ford GT40, equipped with V8s up to seven liters (the famous 427 cu in), which possessed high low-end torque. This allowed Shelby's cars to advance instantly on circuits like Le Mans and Sebring, surpassing opponents who had to constantly shift gears and wait for the engine to reach high RPMs to exit slow corners. The result was the GT40's domination over Ferrari at Le Mans between 1966 and 1969.
However, when the task shifts from winning a race to moving a 57-ton heavy goods vehicle up the Serra do Mar, Shelby's tactic transcends the track and becomes a fundamental principle of industrial physics. Unlike gasoline sports cars, which require high RPMs and stratospheric power to generate performance, the diesel engine operates in reverse: it provides overwhelming force precisely when a conventional engine is barely starting, often before 1,500 rpm. Trying to move 40 tons with a high-revving, low-torque engine would require fragile components and unsustainable thermal consumption, something diesel solves by its nature.
When pressing the accelerator of a large pickup truck or watching a truck pull away at a traffic light, one feels a dry and immediate impulse, a direct result of applied physics. To understand why the engine developed by Rudolf Diesel in the late 19th century became vital to global transport infrastructure, it is necessary to analyze three central elements: mechanical geometry, maximum cylinder pressure, and fuel composition.
The basis of the mechanics is the formula Torque = Force × Radius ($ au = F imes r$). Torque represents the moment of force applied to a rotating shaft. In an internal combustion engine, the Force (F) is generated by expanding gas pushing the piston down, and the Radius (r) corresponds to the length of the crankshaft arm. Diesel engines are intentionally designed to maximize both these variables simultaneously.
While performance-focused gasoline engines generally adopt an oversquare or short-stroke architecture—where the cylinder diameter is greater than the piston stroke, allowing for high RPMs—the diesel engine does the opposite: it is essentially undersquare, combining a long stroke with a narrower cylinder. This longer stroke requires the crankshaft to be positioned further from the axis center, creating a significantly larger mechanical lever arm, similar to using a longer lug wrench.
The devastating force driving the piston is determined by the compression ratio. In a modern turbocharged gasoline engine, the static compression ratio ranges between 9.5:1 and 10.5:1, generating maximum pressures between 80 and 110 bar. Exceeding this limit causes detonation. The diesel engine, by compressing only air and not fuel, does not have this impediment. With compression ratios ranging from 16:1 to 18:1 (potentially reaching 22:1), the air is heated above 600°C, allowing the diesel, injected under extreme pressures (exceeding 2,500 bar in piezoelectric systems), to spontaneously ignite.
The result is that the maximum pressure in a cargo diesel easily reaches 180 to 230 bar or more. Compared to a gasoline engine, which operates with about 100 bar on a short lever arm, the diesel combines over 200 bar of pressure with a long lever arm, resulting in more than double the vertical force on the piston and, consequently, gigantic torque at very low RPMs. Furthermore, the Diesel cycle injects fuel progressively as the piston descends, providing a continuous and sustained push, which keeps the torque curve flat from 1,400 rpm, delivering the brute force needed to move heavy loads.
The immense force generated at the top of the cylinder imposes severe demands on engineering. Applying 220 bar of peak pressure to a lightweight aluminum piston designed for gasoline engines would cause catastrophic failure. Therefore, the robustness of the diesel engine is not an aesthetic issue, but a structural necessity to survive load cycles under extremely high pressures.
To withstand these conditions, diesel blocks employ nodular cast iron or modern compacted graphite iron (CGI) alloys, materials that offer fatigue resistance and torsional rigidity superior to traditional aluminum. Internally, pistons are heavy and feature cooling galleries to dissipate extreme heat, while connecting rods are made of solid forged steel, connected to large-diameter piston pins. The crankshaft uses bearings and mounts with much larger contact areas to support the load and prevent the rupture of the lubricating oil film.
This inherent mass results in greater reciprocating inertia. According to Newton's second law, the force required to accelerate and decelerate a mass in reciprocating motion increases exponentially with rotational speed. Attempting to operate a large diesel engine at high RPMs would cause the connecting rod acceleration force to exceed the combustion force, destroying the engine through inertia. Therefore, diesel engines operate in much lower RPM ranges, rarely exceeding 2,500 rpm in heavy trucks or 4,500 rpm in light pickups.
However, this speed limitation brings a benefit: the linear speed of the piston rings against the cylinder walls is much lower, resulting in much lower accumulated friction than in high-RPM engines. This combination of oversized components and low speeds is what allows these engines to cover millions of kilometers before requiring a complete overhaul.
Although torque and robustness are desirable attributes, they are not sufficient to establish diesel as the absolute standard for commercial transport. Global logistics are governed by cost per ton transported per kilometer driven, and diesel also excels in this regard.
A modern, efficient gasoline engine converts approximately 30% to 35% of the fuel's energy into actual mechanical work, losing the remainder to heat and friction. In contrast, a modern industrial or heavy-duty diesel engine easily exceeds 45% to 50% thermal efficiency. Part of this efficiency comes from the high compression ratio, which increases the theoretical efficiency of the thermodynamic cycle.
Additionally, diesel eliminates pumping losses present in gasoline engines. In the latter, the throttle body in the intake manifold restricts airflow, forcing the pistons to expend energy sucking air against this obstruction. In the diesel engine, there is no throttle body; the intake manifold remains fully open, admitting all available air.
The Motorola Edge 70 with 256 GB of storage is available with a 50% discount compared to its original price of R$ 4,499 at Magazine Luiza. By applying the coupon MOTOROLA100, the smartphone can be purchased for R$ 2,249 using Pix.
This device, which stands out for its elegant design, is considered the mid-range model among the five new devices launched in the line in 2026. Despite its classification as mid-range, it features a versatile and high-resolution camera system.
The cameras include wide lenses with enhanced HDR, ultrawide/macro, and front cameras, all with a resolution of 50 MP and 4K recording capability. Additionally, there is a triple light sensor to optimize light exposure control, which is advantageous for night photos.
The Edge 70's display is a 6.7-inch POLED screen that supports a 120 Hz refresh rate and reaches a maximum brightness of 4,500 nits. This configuration ensures a smooth experience when consuming content, such as social media, and maintains good visibility even under strong lighting.
Built from aluminum, the Edge 70 has a thickness of only 5.99 mm, competing with ultra-thin models from competitors like the S25 Edge and the iPhone Air. It also has IP68, IP69, and MIL-STD-810H certifications, ensuring high resistance against dust, water, and extreme environmental conditions.
In terms of processing, the device is equipped with the Snapdragon 7 Gen 4 chip, which includes an octa-core CPU with speeds up to 2.8 GHz and 8 GB of physical RAM, expandable up to 24 GB via RAM Boost. Although it does not offer the same level of performance as the Edge 70 Pro or the Motorola Signature, it provides well-balanced performance in various areas.
The battery, made of silicon-carbon, has a capacity of 4,800 mAh and supports 68W wired fast charging, as well as 15W wireless charging, providing greater convenience to the user. The device also integrates NFC connectivity, Wi-Fi 6E, and Bluetooth 5.4.
Motorola promises update support up to Android 20 for the Motorola Edge 70 (256 GB), which can be bought for R$ 2,249 via Pix, using the coupon MOTOROLA100 at Magazine Luiza.
XRP price forecasts suggest that the recent drop to the $1 mark may be part of an ongoing downtrend that has significantly damaged XRP holder portfolios. Despite news about growing demand for XRP Exchange Traded Funds (ETFs), the price chart shows few signs of recovery.
In contrast, the pre-sale of the Moonberg cryptocurrency ($MBX) has started very successfully, as traders seek access to an artificial intelligence-based trading terminal that already boasts over 650,000 community members. The $MBX token offers various use cases within the Moonberg trading infrastructure, making it an attractive option for utility-oriented crypto traders.
The XRP price briefly fell below $1 before recovering by a couple of cents. This level has been closely monitored by both bulls and bears for several weeks, meaning its breach could signal the start of another decline. Technical analysis indicates that bears maintain control. XRP continues to form higher lows and lower highs, and weak momentum and position below key moving averages reinforce the bearish outlook.
Positive reports of inflows into XRP ETFs have failed to support the price, as selling pressure continues to intensify. Increased institutional demand apparently has not convinced retail traders that XRP is worth holding, given that comparable large-cap tokens like HYPE and TRX are performing better. Benzinga forecasts a target price for XRP of $1.81 by the end of 2026, but this would likely require a brilliant second half for the entire altcoin market. CoinCodex is less optimistic, setting a maximum target of $1.20, implying a 20% increase from the current price. Overall, XRP price forecasts do not inspire confidence in a major recovery.
Moonberg is a multifunctional crypto trading hub focused on providing the latest AI-based tools, as well as data scanning and tracking features that usually require access to several different services. Among its tools: Moonberg processes 53.4 billion data points and 130 patented metrics. It possibly offers a wider range of tools than competitors like Nansen, which primarily focuses on blockchain analytics, and Arkham, which specializes in wallet tracking and entity analysis.
By combining these capabilities with charting, strategy development, and trade execution, Moonberg reduces the need to switch between separate platforms for analysis, wallet tracking, charting, and trade execution. The native utility token of Moonberg is now available through the official $MBX pre-sale. The total supply of $MBX is limited to one billion tokens. The pre-sale releases tokens in batches, with the first allocation, valued at $375,000, already sold out. Unusually for a pre-sale, the technology determining the token's value can already be tested and used by hundreds of thousands of traders. The token offers several practical use cases within the Moonberg ecosystem.
XRP price forecasts suggest that a major recovery in 2026 is unlikely. The recent dip below $1, even if brief, showed that the downtrend that has plagued the chart over the past year is far from over. The Moonberg pre-sale is well-positioned to capitalize on the sluggishness affecting major coins like XRP, offering a utility token tied to an established crypto trading terminal with a large user base and AI-powered trading solutions unavailable elsewhere.
XRP could recover above $1 if institutional demand continues to grow and the overall altcoin market improves. However, its pattern of higher lows and lower highs indicates that the bearish trend remains unchanged. Before a sustained recovery becomes more likely, XRP must reclaim the $1 level and hold above it.
Audi has begun delivering the new A5 Avant and A6 Avant e-tron models through its dealership network in Brazil. These two vehicles can be acquired for R$ 474,990 and R$ 699,990, respectively. The manufacturer reported that the A5 Avant sold out all available stock during the pre-sale period.
These launches are part of the brand's strategy to revitalize the wagon segment in the national territory. The A5 Avant is available only in the S line 2.0 TFSI quattro version, while the A6 Avant e-tron, also in the S Line configuration, represents the first fully electric Avant body vehicle manufactured by Audi.
Marcos Quaresma, Product Manager for Audi Brazil, emphasized that the company identifies considerable potential in the Avant segment.
The A5 Avant is derived from the third generation of the A5, introduced in Brazil in May of the previous year. It uses the Combustion Premium Platform (PPC) and features the 2.0 four-cylinder turbo engine from the EA888 family, in the evo5 variant. This engine generates 272 horsepower and 40.8 kgfm of torque, coupled with the seven-speed S tronic gearbox and quattro all-wheel drive with Ultra technology. The car can reach 100 km/h in 5.9 seconds, with a maximum speed electronically limited to 250 km/h.
Standard features include seven airbags, three-zone air conditioning system, panoramic sunroof with transparency adjustment, Head-Up Display, 360-degree view camera, adaptive cruise control, and Full LED Matrix headlights. With dimensions of 4.829 meters in length and 2.892 meters in wheelbase, it offers a trunk capacity of 448 liters, or 1,396 liters if the rear seats are folded down.
Built on the Premium Electric Platform (PPE), the A6 Avant e-tron features rear-wheel drive and is equipped with an electric motor that delivers 367 hp and 57.6 kgfm. These specifications allow it to reach 100 km/h in 5.4 seconds, with a maximum speed electronically limited to 210 km/h. The lithium-ion battery has a capacity of 100 kWh and operates on an 800-volt architecture.
The autonomy certified by Inmetro is 440 km. Regarding charging, it takes 21 minutes to go from 10% to 80% using DC chargers of up to 270 kW. In AC mode, the model supports up to 11 kW. Among its differentials are the Matrix LED headlights with eight light signatures, connected taillights, 21-inch Audi Sport wheels, and virtual side mirrors. With a drag coefficient of 0.24, the A6 Avant e-tron is slightly behind the A6 Sportback e-tron, which registers 0.21 and is considered the most aerodynamic Audi ever produced. Its dimensions are 4.928 meters in length and 2.946 meters in wheelbase.
Both models incorporate the cabin inspired by the 'Digital Stage' concept, presenting three screens: an 11.9-inch instrument cluster, a 14.5-inch multimedia center, and a 10.9-inch passenger display. The A5 Avant still features the Bang & Olufsen 3D sound system, composed of 16 speakers and 685 watts of power.
Furthermore, they feature the new version of Audi Connect in Brazil, which integrates over 30 functionalities through the myAudi application. These functions include digital key, emergency calls, vehicle tracking, remote commands, and navigation with real-time traffic information. For electric vehicles, the application assists in locating charging points and planning charging stops. The onboard artificial intelligence assistant uses ChatGPT technology, and Audi guarantees that the license comes with the car from the factory at no monthly cost.
