[2] The W14 was driven by 7-time Formula One World Champion Lewis Hamilton and George Russell, who completed his second full season with the team.

Team Principal Toto Wolff claimed that the W14 would have "different DNA" from the W14's predecessor,[5] the Mercedes W13, after a challenging 2022 campaign that had seen them out of the World Championship battle.

[13][14] After struggling to match the frontrunning pace of Red Bull Racing and Aston Martin in the first five rounds of the season a major upgrade package was introduced for the Monaco Grand Prix, the team having initially planned to run the upgrades for the first time at the Emilia Romagna Grand Prix at Imola – but this race was ultimately cancelled due to flooding in the Emilia Romagna region.

[19] On 7 June, the team's reserve driver, Mick Schumacher drove the W14 for Pirelli tyre test at the Circuit de Barcelona-Catalunya.

[21] In Austria, the Mercedes duo endured a difficult weekend with Russell finishing 7th, and Hamilton in 8th after being handed a 10-second time penalty for exceeding track limits by the stewards.

Toto Wolff, Mercedes' Team Principal who rarely spoke to the drivers during the race promptly told Hamilton on the radio that "the car is bad, please drive it.

"[23] However, the Mercedes duo bounced back in their home turf in the British Grand Prix, with Hamilton again finishing 3rd and Russell in 5th.

[32] During the race, both Mercedes drivers were penalized by the stewards who awarded both of them with five-second time penalties: Russell for skipping the first chicane after rejoining the track from his pit stop, and Hamilton for his collision with the McLaren of Oscar Piastri.

Mid-way through the race, Mercedes opted to pit Russell and Hamilton for fresh medium tires after a late VSC caused by Esteban Ocon who retired due to a gearbox issue.

"[36] In Japan, both Mercedes drivers were looking to replicate their strong performance in Singapore, but both cars could only lock out the fourth row, with 7th placed Hamilton over a second off the pole-sitter, Verstappen.

[40] For the sprint race itself, Hamilton made the most from the incident involving Esteban Ocon, Sergio Pérez, Nico Hülkenberg and climbed up to 5th after starting from 12th to finish behind teammate Russell in 4th.

[46] Coming to São Paulo, the Mercedes team were optimistic about their chance to win in the Brazilian soil again like last season where Russell took his maiden victory.

[48] Team Principal Wolff would later say that the W14 "doesn't deserve a win", after the shocking drop of performance from the very same car that finished second the week prior.

[49] In the inaugural Las Vegas Grand Prix, Hamilton originally qualified in 11th before being later promoted to 10th due to a penalty imposed on Sainz.

[53] Going to the season finale in 2023 Abu Dhabi Grand Prix, Mercedes held a very slim 4-point lead over Ferrari in the Constructors' Championship.

However, Leclerc's plan didn't work as Pérez was 1.1 seconds short, meaning the Mexican finished outside the podium.

Russell and Hamilton came home in 3rd and 9th to seal second place in the Constructors' Championship for Mercedes, just 3 points ahead of Ferrari.

Russell capped off his difficult season with a second podium finish despite claiming that "Lady Luck" might be on Mercedes' side on the race thanks to Pérez's penalty.

[56] Following the conclusion of the Abu Dhabi Grand Prix, the W14 became Mercedes' first car since the W02 (2011) that failed to win a single race during the season.