McLaren
P1
Mercedes-Benz
SLR McLaren
McLaren P1 vs Mercedes-Benz SLR McLaren: 2013 Comparison
The short answer
Based on available data, the McLaren P1 comes out ahead of the Mercedes-Benz SLR McLaren on fuel economy and power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
P1
Overall
Overwhelmingly positive sentiment focused on the vehicle's design, performance pedigree, and status as a landmark hypercar. The aesthetic is consistently praised as "amazing," "sexy," and "gorgeous," with specific acclaim for its rear design and overall lines. It is widely regarded as a significant, era-defining vehicle, frequently mentioned alongside the Porsche 918 and Ferrari LaFerrari as part of the "hybrid holy trinity" that changed the hypercar landscape.
Best version to buy
Insufficient owner data available. The P1 GTR track-only variant is mentioned and described as looking like a "spaceship," but there is no comparative ownership feedback to declare it a "best" version over the standard road car.
Known issues
- ⚠Frequent maintenance and reliability concerns: requires being in the shop "basically every couple hundred miles" for repairs and upkeep, shared with other hypercars like the Veyron and LaFerrari. Frequency: isolated.
- ⚠High cost of exclusive options: full carbon tinted body was cited as an approximately $750,000 option at launch due to complex manufacturing. Frequency: isolated.
SLR McLaren
Overall
The sentiment is overwhelmingly positive, characterized by deep admiration for its iconic, dramatic, and timeless design, which is frequently described as "inspiring," "beautiful," and "brutal." The vehicle is celebrated for its unique character, including its supercharged V8 engine sound, front-mounted side exhausts, and its status as a legendary collaboration between Mercedes-Benz and McLaren. However, a recurrent critical perspective positions it as a flawed grand tourer that was overshadowed by contemporary rivals like the Ferrari Enzo and Porsche Carrera GT. Criticisms focus on its heavy weight, use of a 5-speed automatic transmission (described as a "slushbox"), and a perception that it was neither a sharp sports car nor a truly comfortable GT, resulting from a compromised design philosophy.
Best version to buy
Insufficient owner data available to declare a consensus "best" version. The 722 Edition and rare MSO Edition are mentioned positively as special, high-performance variants.
Known issues
- ⚠Extremely high maintenance costs: brake pad and rotor replacement reported to cost approximately $100,000. Frequency: isolated.
- ⚠5-speed automatic transmission: criticized as outdated, unsporting ("slushbox"), and a weak point compared to competitors' manual or automated manual gearboxes. Frequency: recurrent.
- ⚠Heavy weight: frequently cited as a detriment to agility and track performance, contributing to its grand touring character over supercar dynamics. Frequency: recurrent.
The verdict
The McLaren P1 is the better choice for most buyers.
It has better fuel economy on its best-equipped version than the Mercedes-Benz SLR McLaren, based on the data above. If power matters more to you than running costs, the Mercedes-Benz SLR McLaren is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the McLaren P1 or the Mercedes-Benz SLR McLaren?
Owner reports show similar reliability sentiment for the McLaren P1 and the Mercedes-Benz SLR McLaren. Check the known issues listed above for specific differences between the two.
Which is better for families, the McLaren P1 or the Mercedes-Benz SLR McLaren?
Both seat a similar number of passengers based on our data. The McLaren P1 is classed as a Coupe, the Mercedes-Benz SLR McLaren as a Roadster, which affects cargo space and ride height for family use.
Which has better fuel economy, the McLaren P1 or the Mercedes-Benz SLR McLaren?
The McLaren P1 is more fuel-efficient on paper: 8.3 L/100km combined versus 14.5 L/100km for the Mercedes-Benz SLR McLaren, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the McLaren P1 or the Mercedes-Benz SLR McLaren?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the McLaren P1 than the Mercedes-Benz SLR McLaren. See the known issues comparison above.