Mercedes-Benz AMG GT: The Porsche-Killer

With the Mercedes-Benz AMG GT Daimler obviously aims at the competition in Zuffenhausen. However, it’s not the Porsche Boxster or the Cayman that is targeted, but directly the mighty Porsche 911.

Previously Porsche had crossed with the Panamera into Mercedes territory. Now Mercedes is shooting back with a thoroughbred sports car from AMG in Affalterbach. With the AMG GT, the brand with the star on the radiator grille is launching the successor to the Mercedes SLS.

Design

The front design of the Mercedes-Benz AMG GT contains many elements from racing that make a dynamic impression. LED high-performance headlights with stylized “eyebrows” give the front of the car the characteristic look. The long bonnet with its pronounced domes sets the direction. Flowing shapes and curves, which are increasingly being used by more modern material processing in the automotive sector, create a trend-setting design. Typical for Mercedes is the sporty front bumper with large air intakes and upright diamond grill with central star. In the course of a facelift, the old diamond grill (picture) was replaced by the Panamericana grill from the Mercedes-AMG GT 3 customer sport racing car. In addition, the GT has active aerodynamics, which is called by Mercedes “Airpanel”. Depending on the cooling requirements, the air is allowed to pass through the lamellae to the cooling surface, or diverted towards the underbody.

Although the AMG GT is seen as the successor of the SLS, it has no gullwing doors. These were among the most prominent main features of the Mercedes SLS.

Mercedes M 178 Engine

The 510hp (375kW) strong Mercedes M178 4.0-liter V8 twin-turbo under the long hood of the AMG GT S catapults the 1645kg car in just 3.8 seconds to 100km/h. The engine transfers 650 Newton meters between 1,750-4,750 rpm to the crankshaft.

What looks like a normal front-engine layout from the outside is technically a front mid-engine, because the entire engine block is located behind the front axle. The engine block and the cylinder heads are made of light metal. Two chain driven adjustable camshafts control two intake and exhaust valves per combustion chamber. For a narrower overall design, the two turbochargers are not located as usual on the outer cylinder banks, but are mounted in the inner V of the cylinder. This promises, in addition to the lower mounting position, a more optimized fresh air guidance, since the turbochargers are more centrally in the air flow. Two charge air coolers ensure that the charge air heated by the turbochargers is cooled to a maximum of 25 ° C above ambient temperature before entering the combustion chambers.

Dry sump lubrication enables a low positioning of the Mercedes M178 engine with a low center of gravity. This is especially advantageous for the oil supply of sports cars with high lateral acceleration due to the direct extraction of engine oil from the crankcases.

With its acceleration, the GT S is 0.2 seconds faster than the base model GT with ‘only’ 462hp. The top speed is electrically sealed at 310 km/h.

 

Mercedes-Benz AMG GTS

In the course of a facelift, the old diamond grill (picture) was replaced by the Panamericana grill from the GT R model.

Transmission

The seven-speed double-clutch gearbox of the AMG GT S, which is mounted directly on the rear axle in transaxle design, has been tuned much better than the older one of the Mercedes SLS. The newer AMG gearbox picks up the shift commands significantly faster when the speed limit is reached. During downshifting, the inter-gas function stabilizes the vehicle and minimizes unwanted load change reactions. The clutch also provides an efficient sailing function when removing the foot from the gas. By decoupling from the drive train, the engine speed is lowered which saves fuel. Thanks to the advantageous positioning of the gearbox on the rear axle, there is also a beneficial weight distribution of 47:53.

Mercedes-Benz AMG GT Getriebe

The AMG 7-speed dual-clutch transmission (Source: Manufacturer)

Chassis

The chassis of the GT comes from the SLS. The double wishbone concept is good for lateral acceleration, and provides driving stability at high speeds.

As standard, the Mercedes-AMG GT S rolls on vanadium silver painted alloy wheels. Excellent deceleration is provided by large-dimensioned brake discs, which are ventilated and perforated all around. The composite technology increases stability and reduces weight. The entire AMG brake system offers braking performance as in motorsport.

Mercedes-Benz AMG GT

The AMG rear-axle steering, which is an option on the GT S, makes the vehicle easier to handle and increases driving stability. At speeds below 100km / h it provides an opposite steering of the front and rear wheels. At speeds over 100 km / h the steering of the rear wheels  adjust to the same direction as the front wheels. In addition, the electronically regulated rear-axle locking differential ensures improved traction and steering response.

Mercedes-Benz AMG GT Technik

AMG rear axle steering (Source: Manufacturer)

Interior with Aviation Flair

The interior of the AMG GT can impress with the well-known Mercedes quality. Also in that point Mercedes has made great progress since the SLS AMG, whose interior seemed a lot cheaper with some plastic components. The AMG performance steering wheel and the instrument cluster give the AMG GT S  a sporty look. The design and arrangement of the switches on the center console with the AMG driving unit symbolically represent the V8 biturbo. As a nice additional detail, the AMG crest is embossed into the armrest of the center console. Everything in the interior adds up to the Mercedes-Benz sports car typical “aviation design”.

Mercedes-Benz AMG GT S Interior M178

The center console has four controls on both sides, which is design-related to the cylinder arrangement of the V8 engine.

Mercedes-Benz AMG GT S Heck

The rear lights of the Mercedes-Benz AMG GT S are each equipped with 18 bright LEDs per side.

Models

AMG GT S

In the course of the facelift, the performance of the AMG GT S was increased from 510 hp to 522 hp, which also means an increase in torque by 20 Nm to a maximum of 670 Nm.

AMG GT C

The Mercedes AMG GT C comes as a coupe, as well as a roadster with fabric top.

AMG GT R

The striking Panamericana grille was initially installed on the AMG GT R before it was introduced to the sibling models.

Driving the Mercedes-Benz AMG GT

I got into the drivers seat of the AMG GT S without paying much attention to the technical data. Considering that it is the top of the sports-car line for Mercedes, my expectations were accordingly high. The proud ‘V8 BITURBO’ inscription in the lateral gills is hard to miss while entering the car. Inside you have the feeling of sitting in a slightly wilder Mercedes. I must say that I imagine a comfortable and luxurious car under a Mercedes. The AMG sport seats of the Mercedes-AMG GT S give the driver good lateral support at higher lateral accelerations while providing high seating comfort. The steering is not quite as direct as I would have liked. The difference to the other cars with the star on the hood and the three letters on the rear becomes clear as soon as you press the accelerator unrestrained. The ‘somewhat wild Mercedes’ turns into a beast and beats the rising pulse of the V8 engine with the entry of the turbos into the drivers back. The brute power of the GT S leaves nothing to be desired.

Mercedes-Benz AMG GT S Mercedes M178

Conclusion:

The Mercedes-Benz AMG GT definitely does justice to the GT-designation (Italian: Gran Turismo), and is suitable as a comfortable and well-motorized sports car for long-distance races. The powerful Mercedes M178 engine provides the AMG GT with enough power to show the taillights to many other cars on the racetrack. Compared to the Porsche 911, the AMG definitely needs a bit more time to get used to. Of course it has its own attraction to tame such a beast. As soon as you have mastered the long hood in front of you, the GT S can be precisely controlled.

Mercedes AMG GT

A comparison with the 911 is not really suitable in other respects, because both cars are quite different. Furthermore, the Mercedes AMG GT S does not really need to prove itself. It is important that Daimler has made great progress since the SLR and the SLS to deliver such a car. Since the SL with its luxurious equipment could never properly adopt the image of a real sports car, the Mercedes AMG GT opens new ways for Daimler. With the right continuity, a new star could shine in the future on the sky next to the Porsche 911.


Audi R8 5.2 FSI quattro: The first Generation

The first generation of the Audi R8 was introduced in 2006 and received the name of the successful Le Mans racing prototype. Equipped with a 4.2 liter V8 FSI engine with direct injection, the base model delivered an output of 420 hp (309 kW) at 7800 rpm. In the following years, the engine was revised and received thereby more power.

The Audi R8 5.2 FSI quattro was released in mid-2009 with the 5.2-liter V10 FSI engine and an output of 525 hp (386 kW) at 8000 rpm. At 6500 rpm, the engine known from the S6 transmits 530 Newton meters to the asphalt. While 100km/h can be achieved in just 3.9 seconds, the maximum speed limit for the mid-engined sports car is 316km/h. Continue reading “Audi R8 5.2 FSI quattro: The first Generation”

Porsche Cayman 981: Base Model – S – GTS – GT4

Porsche Cayman 981

The Porsche Cayman 981 c replaced its predecessor model 987c in 2013, and was produced until 2016. In addition to the basic model of the Cayman, the model variants Cayman S, GTS and GT4 were available. Similar to its predecessor, the 981c is based on the same technical platform as the Porsche Boxster of its generation.

Paired with a lighter body than its predecessor, the 981 generation also comes with a bit more power. The naturally aspirated 275hp (202kW) 2.7-liter flat-bodied boxer engine of the base model accelerates the 1310-kilogram Cayman from zero to 100km/h in 5.7 seconds, reaching a top speed of 266 km/h.

Porsche Cayman 981 GTS

The Cayman S, in contrast, with its 325hp 3.4-liter engine, which is also installed in the Porsche 911 Carrera, puts the acceleration to 100km/h in 5.0 seconds. 370 Newton meters are thereby brought from the rear axle onto the road. The top speed is 283km/h.

In the following years, the two more powerful variants Cayman GTS and Cayman GT4 were introduced by Porsche. The GT4 was equipped with the water-cooled 3.8-liter boxer engine from the Porsche 911 Carrera S (991). The chassis, on the other hand, has been largely taken over from the Porsche 911 GT3 (991).

Porsche Cayman 981 987 718 Dursun Karadag Venarca

Due to the mid-engine concept the Cayman has two luggage compartments. It offers 150 liters of storage space in the front, and up to 160 liters in the back. The disadvantage of the rear trunk space is that it is heated up by the heat of the engine. Therefore, heat sensitive things like food should preferably be stowed in the front.

Porsche Cayman 981 987 718

The advantages of the mid-engine layout are evident in the excellent handling and sporty driving dynamics. Many car manufacturers have therefore used the Cayman as a benchmark for their own sports cars. The arrangement of the engine immediately behind the front seats ensures centralization of the mass, whereby drive influences are minimized. The coupe offers a sporty gait and has due to the fixed roof a higher torsional stiffness than the Porsche Boxster.

Porsche Cayman 981 987 718 Cayman GT4

Distinctive to its predecessor 987, the Porsche Cayman 981 has wider side air intakes. In addition, prominent lines were added to the body sides leading to the air intakes.

Electric Power Steering

As with the other models, Porsche has also switched from hydraulic to electromechanical steering on the Cayman 981. This makes the steering easier and more pleasant in everyday life than on its predecessor. The action of the electric steering is felt in a jerky braking on uneven ground. If you take your hands off the steering wheel (we do not recommend it), the active steering interventions help to stabilize the vehicle. Nevertheless, the feedback of the steering behavior is pithy enough to satisfy even purists.

Porsche Cayman 981 987 718 interior Dursun Karadag

Interior

The interior of the Cayman looks and feels high-quality and is designed with lots of leather and brushed aluminum. The dashboard has no differences to the remaining Porsche models. Porsche-typical is the positioning of the ignition key. Due to the racing history in Le Mans it’s on the left side of the steering wheel. Most controls and switches are functionally aligned on the right side.

Porsche Cayman S 981 987 718

The flat roofline was rounded off slightly at the rear, while the front was made more aggressive in the comparison to the 987 generation.



The Cayman GT4

On the basis of the Cayman 981c in 2015 the Porsche Cayman GT4 was introduced to the market. With 385 hp and a maximum speed of 295 km/h, the naturally aspirated engine without turbos transmits 420 Newton meters to the crankshaft. This makes him the sportiest and most powerful Cayman to date. The distinctive optical feature to the previous Cayman models is a rigid rear spoiler is installed. This allows a maximum pressure of 100 kilograms, and reminds you every time you look in the rearview mirror that you are sitting in a thoroughbred sports car.

The Porsche Cayman 981 GT4 on the Nürnburgring

Engine of the Cayman GT4

The GT4 is equipped with the water-cooled 3.8-liter boxer engine from the Porsche 911 Carrera S (991). Since the water-cooled six-cylinder is installed as a mid-engine in the GT4, it had to be rotated by 180 degrees to be connected to the transmission. For reasons of space, further modifications to the intake tract and the exhaust system had to be made, whereby the performance compared to the Carrera S was somewhat throttled.

Chassis from the Bigger Brother

The chassis of the Cayman GT4 has been largely taken over from the Porsche 911 GT3 (991). The braking system of the GT3 is expected to provide more than enough braking power for the 90 kilogram lighter Cayman. While Porsche delivered the 911 GT3 only with a dual-clutch PDK, it’s the exact opposite with the Cayman GT4. In favour of the hardcore fans the GT4 is only built with a manual transmission.

Transmission for Enthusiasts

The built-in manual gearbox saves the Cayman GT4 a little weight, but still makes a small smear in the acceleration. Manually changing the six gears takes more time than the PDK would require. So it takes around 4.4 seconds to 100km/h with the GT4, which is far from a bad value in itself. And since purists prefer to sort the gears themselves, this is not a real disadvantage. After all, in the not-too-distant future, self-driving cars will even take away the steering. Until then one may quietly enjoy the time in which you as a driver still have the control over the car.

Interior of the GT4

The interior is designed in the classic Porsche style with sportiness in mind. One small detail stands out when opening or closing the doors. For that you have to pull on a colourful door lash, instead of a normal door handle. According to the manufacturer this is due to weight reasons. The racing steering wheel is free of any buttons and covered with Alcantara. The rest of the interior is held in alternation with leather and Alcantara relatively simple.

Porsche Cayman 981 GT4



The successor of the Cayman 981

In the summer of 2016, Porsche completely revised the Cayman, and introduced the series 718 (Type 982). The successor of the 981 comes with new 4-cylinder turbo engines. This puts an end to the beloved 6-cylinder engines due to the current downsizing measures in the automotive industry. Similar to the two predecessors, the 718 Cayman has the same technical platform as the Porsche 718 Boxster. While the earlier generations (987 and 981) were offered at a higher price than the Boxster, the new series has become Porsches entry level sports car.

Porsche Cayman 981 718


Porsche Cayman 981:

Ford Mustang GT 5.0 Ti-VCT V8

The Ford Mustang GT 5.0 Ti-VCT V8 was launched in late 2014 in the United States, and has been available in Europe since 2015. In addition to the coupe, it is also available as a convertible with soft top.

Power

The 5.0-liter V8 engine provides 421 hp (310 kW) and accelerates the 1,720kg Mustang GT in 4.8 seconds from 0 to 100 km/h. Here, 524 Newton meters are transmitted at 4,250 rpm via the crankshaft to the rear wheels. The maximum speed of the car is 250km/h.

Continue reading “Ford Mustang GT 5.0 Ti-VCT V8”

Mazda RX-Vision: The Return of the Rotary Engine

With the Mazda RX-Vision (we also might call it RX-9) the successor to the RX-8, was presented at the Tokyo Motor Show 2015. Like its predecessor, the RX-9 is planned to be powered by a rotary engine, which can bee seen as a trademark of Mazda. The market release of the Mazda RX-9 is planned for 2020.

Rotary Engine

Mazda has always stuck to the unconventional technology of the rotary piston engine. The new generation of the rotary engine named SKYACTIV-R now contains the developments of recent years. Apparently, Mazda has made big progress in the further development of gasoline and oil consumption technologies. It should be noted that these advances did not come about with the use of turbochargers.



Design

The design of the RX-9 was awarded the “Car Design Award 2016” in the category “Concept vehicles”. It fits in with the current trend of recent years. Similar design elements can be found on the Aston Martin DB11 or the Mercedes AMG GT. The striking bonnet and the short tail mark the 4.38-meter-long two-seater.

Porsche 911 GT1

The Porsche 911 GT1 was developed from 1996 to 1998 for the 24h-race in Le Mans. It is powered by a water-cooled mid-engine.

Jaguar F-Type R AWD Coupé

The Jaguar F-Type is considered the heir of the famous E-Type from the 60s, and is manufactured since 2013. As a successor to the Jaguar XK, it was initially available as a fabric roof convertible. In early 2014, the coupe was added.

Engine and power

The front-mounted 5.0-liter V8 supercharged engine in the F-Type R delivers a maximum output of 550 hp (405 kW) at 6500 rpm on the tarmac. At a speed between 2500-5500 rpm, 680 Newton meters are transmitted to the rear axle.

The acceleration to 100 km / h lays the 1665 kg heavy Briton from a standstill in 4.1 seconds. The maximum speed is limited at 300 km / h.



Jaguar F-Type SVR

Since 2016, the model series has been expanded with the F-Type SVR with all-wheel drive. The top-of-the-line model with a twin-vortex compressor has an output of 575 hp (423 kW), and needs only 3.7 seconds to accelerate from standstill to 100 km/h. It is currently (2017) the most powerful sports car Jaguar has ever built.

Pirelli P Zero Jaguar F-Type R
The 20 inch Pirelli P Zero of the Jaguar F-Type R

Body

The Jaguar F-Type uses the same platform with all-aluminum chassis like the XK. It is significantly shorter than its predecessor. A special underbody shaft and engine mounts, as well as a double bulkhead between the engine compartment and the passenger compartment, efficiently isolate sound and vibrations.


Jaguar F-Type R AWD Coupé
Jaguar F-Type R AWD Coupé

Conclusion

The Jaguar F-Type R has plenty of power. It may not reach up to the Porsche 911 Turbo, however, it comes about one third cheaper.