Staff

Courtney Chagnon brings extensive automotive industry leadership and specialized expertise in Finance & Insurance (F&I), lending practices, and manufacturer brand relations. Serving as the General Sales Manager at Grappone Mazda in Concord, NH, Courtney takes great pride in leading her team, sharing her knowledge, and supporting her colleagues’ professional growth.

What brought Courtney back to Grappone Mazda was the welcoming family atmosphere and the core values of treating every guest with integrity, kindness, and respect, paired with Mazda’s Omotenashi hospitality philosophy.

When working with Courtney, guests can expect a straightforward and completely transparent interaction where they work with one dedicated team member who understands their needs from start to finish.

Her favorite vehicle is the Mazda CX-70 Turbo S Premium Plus in Melting Copper Metallic, chosen for its luxurious feel and sporty drive.

Justin Diamond serves as a Sales Manager at Grappone Mazda, bringing comprehensive sales experience across all dealership operations after advancing through roles as a Lot Attendant, BDC Specialist, and Sales Consultant.

He holds professional sales training from the Nelson Group and F&I excellence certification through Reahard & Associates. Justin was initially drawn to Grappone Mazda when it began moving in an exciting new direction and leadership was implementing innovative operational ideas, making him eager to be a part of that evolution.

Guests working with Justin can expect to be treated with absolute integrity, kindness, and respect—core principles of the Grappone Mission that he fully stands behind while helping guests feel excited and confident throughout their journey.

His favorite vehicle is the manual-transmission Mazda MX-5 Miata because of its engaging driving performance and classic gearbox.

Danielle Kerkel is a Sales Manager at Grappone Mazda, having transitioned into automotive sales following a career in elementary education and initially working with another Grappone Automotive franchise.

When looking for a new career path, Danielle was drawn to Grappone because her family members were loyal Grappone shoppers, and she strongly resonated with the organization’s mission of treating every guest with honesty, transparency, and respect.

Guests working with Danielle can count on kindness, genuine communication, and a focus on building lasting relationships that extend well beyond the initial vehicle delivery and into ongoing service visits.

Her favorite models are the Mazda CX-50 and CX-50 Hybrid, highlighting their standard All-Wheel Drive, driver-centric cabin design, and spacious cargo capacity.

Matthew Collins is a Product Specialist at Grappone Mazda who grew within the organization after starting in parts distribution.

A long-time brand advocate whose first vehicle purchase was a 2011 Mazda3, Matt chose to represent Mazda at Grappone because he personally knows what the product brings to the table and fully stands behind its engineering and quality.

Guests working with Matt can expect a personal, pressure-free environment where he focuses on listening and answering questions to ensure buyers find the right vehicle no matter how long the process takes.

His favorite Mazda is the Mazda CX-70 across all trim levels, noting its spacious interior layout, onboard technology, and 3.3L inline-6 turbocharged engine.

Joshua Newhook serves as a Product Specialist at Grappone Mazda, bringing valuable vehicle testing experience from his previous work with the Car and Driver testing team in Ann Arbor, Michigan, alongside recognition as a Mazda Prestige Ambassador Award recipient.

Josh chose Grappone Mazda because of his confidence in the brand’s upward mobility, proven reliability, and compelling design style.

Guests working with Josh can expect a comprehensive look at all available options, complete with thorough explanations of vehicle features, trim levels, and how Mazda models compare to their current vehicle and the broader market.

His favorite vehicle is the Mazda MX-5 Miata, appreciated for its 50/50 weight distribution, direct manual transmission, and accessible sports car performance.

Silas Schreyack serves as a Product Specialist at Grappone Mazda, focusing on delivering a personalized, guest-first sales experience.

Silas was drawn to Grappone Mazda after hearing great things about the organization from a family member, and the welcoming team members he met during his interview process confirmed it was the right place for his career.

Guests working with Silas can expect a warm smile, attentive listening, and an overall relaxed, stress-free experience where their needs are put first.

His favorite vehicle is the Mazda3 Sedan styled with black alloy wheels for its responsive handling and comfortable ride quality.