Endless Summer Ascari

With more than 41 years of experience in Motorsport (Rallye and Racing) the Team around Renate-Carola and Bernhard Muehlner is your partner when it comes to successful and reliable racing!

Since 30 years Muehlner Motorsport is taking part in the German Endurance Championship at the Nuerburgring, the so called VLN on the famous Nürburgring Nordschleife. On top of that Muehlner Motorsport also participated in DTT, DTC, Porsche Supercup, FIA GT3 European Championship, FIA GT World Championship and ADAC GT Masters.

Since 2010 Muehlner Motorsports America is racing in Grand Am, IMSA Championship and Challenge and World Challenge America.

Also in iconic events like the FIA world final Macau, Petit LeMans 10h, Sebring 12h, 24h  Nürburgring, 24h Spa-Francorchamps and the Daytona 24h Muehlner Motorsport participated with successful results.


More than 300 podium results, nearly 150 victories and the experience of 800 races: Muehlner Motorsport provides cars that are prepared perfectly for the high demands of racing, so that you can enjoy your “Endless Summer” to a full extend!

Take advantage of the “Driver Development” program of Muehlner Motorsport: professional drivers and driver coaches, successful in national and international racing, will be able to provide detailed video- and data analysis with Race Navigator and Cosworth Hard- and Software to make you a faster and safer driver!

Track support and engineering is also provided by Muehlner Motorsport: Service for brakes, tires, suspension and to work out of the perfect setup are available for “Endless Summer” and “Winter GT Series” as well.

We are looking forward to see you!

Info & Contact

For Bookings please contact

Moritz Kranz

phone: +32 87 27 91 91

mail: moritz@muehlner-motorsport.com

Porsche Cayman 981 GT4 CS

385 HP, PDK, bucket seat, roll cage, 10-fold ESP, VLN championship winning car “Cayman GT4 Trophy”

  • 1 Day, incl. 250 km 3.045 €
  • 1/2 Day, incl. 150 km 1.845 €
  • 50 km upgrade 580 €
  • Vehicle damage insurance *amount assured 77.500 €, deductible 12.500 €1.083 €
  • GT Winter Series ca. 200-250 km incl. service and one set of sticker tires 5.145 €

Porsche Cayman 981 GT4 CS MR

385 HP, PDK, bucket seat, roll cage, 10-fold ESP, VLN race winning car in GT4 class, 2018 evo package

  • 1 Day, incl. 250 km 3.400 €
  • 1/2 Day, incl. 150 km 2.055 €
  • 50 km upgrade 645 €
  • Vehicle damage insurance *amount assured 100.000 €, deductible 15.000 €1.321 €
  • GT Winter Series ca. 200-250 km incl. service and one set of sticker tires 5.500 €

Porsche Cayman 718 GT4 CS

425 HP, PDK, bucket seat, roll cage, 10-fold ESP, VLN race winning car Cayman GT4 Trophy

  • 1 Day, incl. 250 km 3.540 €
  • 1/2 Day, incl. 150 km 2.205 €
  • 50 km upgrade 700 €
  • Vehicle damage insurance *amount assured 100.000 €, deductible 15.000 €1.321 €
  • GT Winter Series ca. 200-250 km incl. service and one set of sticker tires 5.640 €

Porsche 991.2 GT3 Cup

485 HP, 1290 kg, sequential paddle shift, bucket seat, roll cage, Bosch Race-ABS, VLN GT3 Cup class championship winning car, 24h race SP7 class winning car

  • 1 Day, incl. 250 km 7.030 €
  • 1/2 Day, incl. 150 km 4.260 €
  • 50 km upgrade 1.340 €
  • Vehicle damage insurance *amount assured 115.000 €, deductible 15.000 €1.500 €
  • GT Winter Series ca. 200-250 km incl. service and one set of sticker tires 9.130 €

Trackday Support

  • Trackday-Service I Provision, air and fluid service, basis check-up 280€ / Day
  • Trackday-Service II Trackday-Service I plus: Refueling, tire change, brake check and change service, intensive check-up, car wash 500€ / Day
  • Trackday-Service III Full service divided between two drivers 700 € / Day
  • Trackday-Service IV Exklusiv mechanik for two days inkl. all travel and hotel costs etc. 1.800€ / Day


  • Consolidated transport Nürburgring -> Ascari -> Nürburgring 2.450 €
  • Ascari -> Circuito Iberia 510 €
  • Circuito Iberia -> Estoril 1.300 €
  • Estoril -> Portimao 495 €
  • Portimao -> Ascari 610 €
  • All Prices are subject to VAT
  • Prices only include the costs for the car. New tires and fuel will be billed by their consumption
  • The entry fee for the trackday and the entry fee for the GT Winter Series and transport costs as well (except Ascari) are not included

IMSA Prototype Challenge 2019: Round 5 at VIR

VIR / DeLand: Muehlner Motorsports America, based in DeLand / Florida is running two Norma M30 on behalf of Robillard Racing in the IMSA Prototype Challenge 2019.

Drivers are Joe Robillard (car #10) and Stevan McAleer (car #43).

After Sebring McAleer was also able to win round 5 at the Virginia International Raceway. Before the last round at Road Atlanta in October, McAleer is now 3rd in the points.

Full season in IMSA Prototype Challenge

Whippany, NJ. / DeLand, FL

Robillard Racing and Muehlner Motorsports America are pleased to announce they will be entering a full season in IMSA Prototype Challenge with two Norma M30 LMP3 prototypes.

Although the team name is new to the IMSA paddock everybody involved with the ambitious program has vast experience in professional racing including IMSA in particular.  Driver and team owner Joe Robillard will again be joined by last year’s team mate in IMSA’s GS Class, Stevan McAleer, in a great combination of tenacity and enthusiasm.

McAleer’s excitement is clear: “What a cool step to take for 2019.  It’s been a long time since I’ve driven a true downforce car but I am confident that I can adjust quickly and fight for the IMSA LMP3 championship out of the box. Ecstatic is an understatement and cannot wait to get going!!!”

Joe Robillard is equally excited: “Moving back to purpose-built, downforce car is very exciting.  So far in testing, the Norma is amazing, and the first race can’t come soon enough.”

On the technical and managerial side of the effort will be seasoned engineer Marc Manning who has a vast resume in prototypes, sportscars, and formula cars.  Bernhard Mühlner and his team from DeLand, FL are excited to bring a wealth of championship winning experience to the program.

“I am extremely pleased in so many aspects of this program.” said Manning.  “The enthusiasm exhibited by Joe Robillard is contagious and has opened a new and different chapter in my career.  It is rewarding to keep learning rather than stagnate with a notebook of old notes and keep trying more things more often”. 

It was this reasoning that led Manning to call Bernhard Mühlner.  He and Manning have worked together and learned to utilize each other’s strengths.  At St. Pete earlier this year, they achieved two pole positions, two fastest laps, and two podiums the first time out.

Manning said, “Bernhard has a proven race winning organization, so there was a natural connection to Robillard Racing’s aspirations, and a home away from home for us in Europe in the future.”

IMSA Prototype Challenge consists of two 3-hour races and four 1-hour 45-minute races.  The team will field a shared car for the two longer races, and two individually driven cars for the four shorter races.  The team recently returned from the Michelin Test day at Daytona International Speedway and were thrilled with the performance of the Norma M30.

PWC GTS SprintX Round 4: Kranz & Piana at Portland / Oregon

Round 4 of the Pirelli World Challenge GTS SprintX Series went not according to plan.

Moritz Kranz was able to secure a top 10 spot on the grid for race 1 but an unlucky penalty in the 2nd half of the race after the pitstop ruint the result: P13 from 33 cars.

Race 2 was even worse: Kranz could not avoid an accident and finished finally only 16th from 31 cars.

Because of the huge damage the team decided not to participate in round 5 of PWC GTS SprintX Series at Utah.

Already now Muehlner Motorsports is working on programs for the 2019 season in PWC GTS and the PWC GT4 Series East.

Very successful PWC weekend at LRP

Moritz Kranz and Efrin Castro had a very succesful weekend at Lime Rock Park with two podium finishes in the Pirelli World Challenge GTS races.

The H&R Springs supported Cayman GT4 MR #21 finished 3rd in class in race 1 and 2nd in race 2.

The next PWC SprintX weekend will take place at Portland / Oregon in Juli (13th – 15th)

New Design for the H&R Cayman GT4 #21 before the PWC race at Lime Rock Park


The DeLand / Florida based Muehlner Motorsports America Team competes from now onwards with the same livery as used also in Europe.

The H&R supported Cayman GT4 MR #21 will participate this week in the next round of Pirelli World Challenge at Lime Rock Park.

Drivers will be Efrin Castro and Muehlners regular driver Moritz Kranz.

The two races will be on Monday, May 28th (Memorial Day).

VIRginia Raceway: Results did not show the true performance

Following the hugely successful participation in the first race of the Pirelli World Challenge in St. Petersburg / Florida in March, Muehlner Motorsports America run the H&R Porsche Cayman GT4 MR last weekend at a PWC SprintX event at the VIRginia International Raceway.

Gabriele Piana, who had dominated the two practice sessions and the qualifying in St. Pete and was able to clinch two excellent second places in both races, shared the Cayman #21 at VIR with Moritz Kranz.

The format of the PWC SprintX GTS series is made for two drivers and the two 60minutes races have a required pit stop between 25 and 35 minutes into the race. With 37 cars, the PWC GTS series is one of the strongest GT4 series in the world.

After a test day on Thursday, where Piana and Kranz had the chance to familiarize themselves with the track in two 40-minute sessions, the official part of the PWC event kicked off with a free practice on Friday morning. For most of the session, the Muehlner duo had been on P1 on the timing monitor and countered every time a competitor was able to achieve a better lap time on the increasingly fast track. When free practice was stopped prematurely, Kranz was on a very fast lap with much better times in sector 1 and 2, but had to slow down in the last sector because of a yellow flag. Ultimately it was then P2 with a residue in the thousandth range.

The second practice session on Friday afternoon was a little out of place: Despite fresh tires, Kranz and Piana were slower than in the first free practice and the spoiled team was unexpectedly on P16. Therefore, extensive set-up changes were made overnight for qualifying.

Kranz was then able to qualify the H&R Cayman for third grid position in the very strong field of 37 GT4 cars and thus the world was in order again.

But that should not be for long. From grid position 3, Kranz started the race and lost a spot in the start turmoil. An accident led to a safety car period and after the re-start Kranz pushed hard, unfortunately too hard, lost the car and sailed off the track and through the vast meadows of the VIRginia International Raceway… Before Kranz was back on the track, half of the field passed by. Since the hot slicks were now full of grass and could no longer build up grip, more competitors overtook the H&R Cayman #21. With one of those competitors there was also a contact and Kranz flew off the track again and landed this time in a tire wall. With the toe at the rear axle obstructed by the “enemy contact” and lack of aerodynamics due to the front bumper destroyed in the tire wall, Kranz then came to the mandatory pit stop one lap later and handed over the wounded Cayman on P34 to Piana.

Piana tried hard to recover and was already back in the Top Twenty when it came in an overtaking maneuver to a misunderstanding and another collision, which damaged the radiator of the Cayman, what led to a DNF and a night shift for the mechanics.

In the second race on Sunday, the H&R Cayman # 21 had to start from P25. Starting driver Piana came back from the first lap already on P17 and by a strategically planned pit stop with driver change Kranz was even already on P13 as he put in one fast lap after another and soon entered the Top Ten. When some competitors had a drive through penalty for breaches of the compulsory pit stop and Kranz continued to overtake, the H&R Cayman #21 made it up to P7. Kranz was in the middle of the pass of the car on P6, when a Full Course Yellow followed by a safety car period neutralized the race, before the race ended prematurely behind the safety car.

Bernhard Mühlner after the race: “What a weekend with ups and downs.” P3 of 37 cars in qualifying was a strong performance by Moritz, but the first race was catastrophic and the expectations for the second race were rather low because of the bad starting position. The catch up and a Top Ten result was a reward for the hard work of the mechanics and if the race had not been prematurely ended Moritz could have made it at least up to P5. But taking into account our expectations and the actual competitiveness of our package, we are of course not satisfied with the results here at VIR. At least the drivers and the car showed the real potential in free practice 1, the qualifying and in the second race. The good result in the second race after a strong recovery in such a strong field, despite a poor starting position, makes us conciliatory, but at the next PWC SprintX event in Lime Rock, Connecticut, we will do our best to achieve better results.”